Windows 8 will not start, shows a black screen with cursor

Similar Questions

• After my computer will crash does not start has a black screen with message operating system not found. Responsible for recovery disc but wont start.

  not boot Vista after that computer crashed have a black screen with message operating system not found.recovery discs won't load

  Go to your Bios/Setup, or the Boot Menu at startup and change the Boot order to make the DVD/CD drive 1st in the boot order, then reboot with the disk in the drive.

  At the startup/power on you should see at the bottom of the screen either F2 or DELETE, go to Setup/Bios or F12 for the Boot Menu

  Above is the way you normally boot from the Vista recovery disks.

  If you have tried to boot from the recovery without success disks, contact the manufacturer of your computer.

  This isn't their recovery process, Microsoft.

  See you soon,.

  Mick Murphy - Microsoft partner

• Windows 7 shows a black screen with cursor

  I tried to upgrade my desktop Windows 7 Edition computer Home Premium to Windows 10.  I did the morning but left him to finish while I was at work.  When my husband returned he said it was completed 99% so it just reduced and used the computer.  At the time I got home a few hours had passed and it was still 99%.  I tried to restart and now after I get in Windows startup and password screens. I have a black screen with the arrow cursor moving very well.  How can I fix?  Thank you!!

  Hello Mary,.

  I would like to know some information about the problem so that we can help you better.

  What is the brand and model of your computer?

  Thank you for details on the issue.

  I also know that the inconvenience that you are experiencing due to black screen problem. I will definitely help you.

  This problem may occur because of corrupted display driver.

  To diagnose the problem, please Start Windows in safe mode and check the number.
  Reference:
  https://support.Microsoft.com/en-us/help/17419/Windows-7-Advanced-startup-options-safe-mode

  If the problem does not persist in safe mode, uninstall the display driver. Please follow these steps:

  a. press Windows + R keys together, type devmgmt.msc in the run box, and then press ENTER.
  b. Click to enlarge graphic cards, right-click on the map and click Uninstall.
  c. restart the computer.

  Now, reinstall the display in normal mode driver. You can either download and install the driver to display from the manufacturer's website or proceed as described in the following article.
  Reference:
  Updated a hardware driver that is not working properly
  https://support.Microsoft.com/en-us/help/15048/Windows-7-update-driver-hardware-not-working-properly#update-driver-hardware-isn ' t-work-properly = windows-7

  I hope this information helps.

  Please let us know if you need more help.

  Thank you

• Windows 8 will not start to sign in screen

  Hi all

  I'm sorry if this problem has been posted, but I read a lot of discussions that do not apply to my question. I can't get into safe mode. I can't access the operating system. I can't do anything. It shows the Packard Bell logo and spinning loading animation and then nothing. Black screen.

  Can someone tell me please how to fix this? As said I can't in safemode, bios or anything. I tried to boot from the drive with an ISO image of a registry Fixer to this topic. Nothing.

  Please please help.

  The most modern machines do not use the old Chargers to start which allowed you to enter safe mode F8 during the startup mode.  If you can't reach the Windows login screen, you can get into safe mode by restarting while clicking the option to reboot, but it does not help if you can't get there.

  Given that, most of the manufacturers have prepared with their own solutions. My computer Vaio from Sony has a button of special pinhole that I had to press with a paper clip to enter into recovery mode.  Other manufacturers have other options, some require a USB thumbdrive to enter recovery, or a CD.

  At this point, you probably want to contact Asus to know which recovery method they use.  I hate to bring bad news, but they'll probably say "why did not a recovery USB disk? (as if someone creates their own set of disks of repair when they receive a new computer).

  Help a friend with a Dell laptop (did not have a problem, but wanted a clean install anyway), Dell sent us a free night FedEx ship from a restore CD. ASUS could be so kind. I know that Sony was not. If the recovery of my Vaio button didn't work, they wanted $60 for a CD!

  Anyway, the manufacturer is your best bet, that now, if you don't have a USB self made for recovery.

• Computer laptop HP Presario CQ57 (Windows 7) will not start.

  Computer laptop HP Presario CQ57 (Windows 7) will not start.

  Memory test: past

  Smart Check: spent

  DST short: failure

  ID Q7PS33-5T76ND-MFKR5F-60VV03 failure

  Product ID: QE321UA #ABA

  Hard drive

  Hello:

  The failure of DST short is normally indicative of a hard drive that has failed and must be replaced.

  The operating system and the software can be reinstalled using recovery discs that you made or purchased from HP.

  In order to use the recovery disks, you need to replace the hard drive with one of the same storage capacity or more.

• CHKDSK replaced the security id not valid with default security id & showed a black screen with the mouse cursor

  Hi you

  After running CHKDSK, it said replacement of the security id invalid with the default security id in windows 7 64 bit

  After that it's over, he just showed a black screen with the mobile mouse cursor!

  I searched but did not find the answers on Microsoft

  Please help me

  Hello

  Thanks for posting your question on the Microsoft community.

  We need more information about the issue so that we can help you better.

  Check the drive run at Windows startup?

  Thank you for details on the issue.

  This message is displayed because the specified file has an invalid security ID. Each file on a NTFS or FAT volume has security what ID assigned. The ID assigned to the data file does not match the ID assigned to the security data stream file ($SDS). There is a mismatch of Ids. CHKDSK replaced the invalid security ID.

  Black screen with cursor may appear due to corrupted display driver.

  I suggest you try using the steps described in this article and check.
  Reference:
  Why my screen is black when I start Windows 7?
  http://Windows.Microsoft.com/en-us/Windows7/why-is-my-screen-black-when-i-start-Windows-7

  Important notes:
  Serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base:
  http://Windows.Microsoft.com/en-us/Windows/back-up-registry#1TC=Windows-7

  Running chkdsk on the drive if bad sectors are found on the disk hard when chkdsk attempts to repair this area if all available on which data can be lost.

  When you use system restore to restore the computer to a previous state, the programs and updates that you have installed are removed.

  I hope this information helps.

  Please let us know if you need more help.

  Thank you

• Satellite Pro M10 will not start again and comes up with the error message

  My laptop Toshiba Satellite Pro M10 will not start again and comes up with the error message "load error" when I press the power button.
  The arised problem after installation of the 'symantec system works' and try to restart windows XP Professional to make the installed executable program.

  What can I do to get the notbook again reboot?

  Hello

  Seems that there are problems with the files of GoBack.

  Try to boot in safe mode and remove the Norton System works from your laptop ;)
  If this does not help, you will need to recover the laptop with the recovery CD Toshiba delivered!

  Also I recommend to visit the Symantec support site and to check the solutions to the problem with the Norton System Works programs

  Good luck

• Hi, I just upgraded my 4s to 9.3.2 and now it is completely dead and will not start. Had no problem with any other previous updates.

  Hi, I just upgraded my 4s to 9.3.2 and now it is completely dead and will not start. Had no problem with any other previous updates.

  Sorted now

• Windows 10 boots and stuck on the black screen with high CPU

  Hello

  I have a MBP 15 "mid 2015 16G with AMD R9 M370X i7.

  I've been running bootcamp with Windows 10 installation for about a month now without any problems.  However, yesterday 10 Windows started and has been blocked in a black screen (before any screen logo or connection win) with the CPU works hard and hot.

  1. I tried to restart some time hold button / stop and start with the option key, key and then selecting the windows bootcamp partition but it drove the same black screen with CPU hot work in the background.

  2. I can always start OSX fine during this period.

  3. I tried to leave in the black screen for a good 10 minutes, but it does not change and the MBP gets really hot.

  4. I tried clearing NVRAM with Boot option + command + P + R

  5 I can't in Windows 10 safe mode using F8 or FN + F8 after you select windows to boot manager (starting with the down option).  Am I missing something here?

  I don't have a copy of Installer windows 10 with me right now unless someone can tell me how to create one under OSX.

  I searched on the internet forum and apple, but have not found a solution that works for me.  Many speak of win10 black screen with cursor showing, but my question is just a black screen with no cursor.

  Someone at - it other ideas besides reinstall Windows 10?

  You have a black screen with or without power adapter, both? If 10 Windows does not start correctly three times, it should bring up the recovery console. Windows automatic updates are enabled? You have created/activated Windows system restore points?

• Windows 7 Pro black screen with cursor on all modes and no login screen

  OK so basically, it's how, my laptop decided to me-screw right when I need to make some adjustments to my final project for next week.

  Friday he started very well in class and at the end of the course at 6:30, I stopped him. I normally don't that often stopped because I usually find myself opening upward in an hour later. But I did this time and when I got home and turned on around 9:00, it started like this:

  Screen Compaq PhoenixBIOS > Windows boot animation > black screen with cursor mobile, no login screen

  No screen connection. No sound. Not nothing but a black screen and the cursor movement. So I force shutdown and turned it back, this time he asked a chkdsk and I ran it. A ton of stuff file unreadable came and it took all night to run through it all. Tried to start again and Windows Error Recovery came and I tried all Modes of security and start normally and all produce the same black screen and the cursor with no login screen.

  Then I used my Windows 7 dvd repair to try and system restore to a week before. That's where I noticed that windows had installed a critical update at 12:00 on Friday. Tried to restore before that, but he failed. Gave me an error 0 x 80070057 and said I should run chkdsk /r and then try again. Then I used the cmd prompt through dvd repair and he has seen all these things wrong file again once recovered things then realized hours later. Tried to restore the system again. Still the same error. A run chkdsk again through the cmd prompt, then he went to clean without errors or orphaned files or anything, but it took a lot of time. I used the Startup Repair, and he has not found anything wrong either. But still the same error the system restore.

  So I looked around online for the last two days, trying to figure out and that someone said to try CTRL + Alt + Delete, the sticky shift key thing. So I tried to boot the system again, same black screen with cursor movement. I did CTRL + Alt + Delete, nothing. Press and hold the SHIFT key, and a pop-up window asked FilterKeys. Press the SHIFT key 5 times, a popup asked about sticky keys. But that's all I can get it to do. Nothing else. I tried to boot into safe mode with F8, chose, each of them and that changes in screen resolution and the words "safe mode" in all the corners of the screen. If the repair dvd's while I start in safe mode, it will open as well in safe mode, but with the same black background mode. Tried running sfc/scannow through repair invites cmd of the dvd and it says a system repair is pending and he had to restart, and then run the sfc/scannow. Tried, but it doesn't do anything when I restart except go to Windows Error Recovery asking either start in any safe mode or normally. And then it's just black screen again.

  So I am at a complete loss what to do now. After all of this mess, it seems that this Windows Update Friday afternoon did something and when I booted it upward once again, his cause nothing but problems. I think it has something to do with the display and the graphics card drivers? It's as if the thing starts but I do not see anything either because the sticky keys appears, but sees nothing else, no matter what I do. Seriously, I don't want to this junk because this is a new hard drive and I was just able to retrieve my files from my old hard drive that had epic failures as well. And I just got this new specifications I wanted as well.

  Laptop Spec:

  Compaq CQ50-115nr
  OS: Windows 7 Professional
  HARD drive: Western Digital Scorpio Blue 320 GB SATA WD3200BEVT
  Processor: AMD Turion X 2 RM-70
  Graphics card: NVIDIA GeForce 8200 M G
  Memory: 3 GB RAM

  If someone could seriously help me I would be VERY happy.

  Hello

  This isn't good news.

  --------------------

  STOP: 0XC000021A

  Can be a difficult problem to solve, and you indeed need a technical help in a real store of the computer
  (not the leeks and the glances at a BestBuy or other BigBox stores) or system manufacturer support.

  Cause

  This error occurs when a subsystem of mode user, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), irremediably compromised and security can not be guaranteed. In response, the operating system goes into kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, it is one of the rare cases where the failure of a user mode service can stop the system.

  Incompatible system files can also cause this error. This can happen if you restored your hard disk from a backup. Some backup programs may skip restoring system files which they determine are in use.

  Solve the problem

  Run the kernel debugger is not useful in this situation because the error occurred in a user mode process.

  Resolve an error in the user-mode device driver or system, third-party application service: Because the bug 0xC000021A control occurs in a user mode process, the most common culprits are third-party applications. If the error occurred after the installation of the new or updated device driver or service system, third-party applications, the new software should be removed or disabled. Contact the manufacturer of the software on a possible update.

  If the error occurs during the system startup, restart your computer, and then press F8 to character-based menu that displays the choice of operating system. In the Windows Advanced Options menu that results, select the last known good Configuration option. This option is most effective when a pilot or a service is added at a time. If the error is not resolved, try to manually remove the offending software. If the system partition is formatted with the (FAT) file allocation table, use a MS-DOS boot disk to access the hard disk of the computer. If the system partition is formatted with the NTFS file system, you may be able to use Safe Mode to rename or remove the defective software. If the defective software is used as part of the start-up procedure of the system Safe Mode, you must start the computer by using the Recovery Console to access the file. If a room newly installed if material is suspected, remove it to see if that fixes the problem.

  Try running the emergency recovery disk (ERD) and allow the system to repair any errors that it detects.

  Solve a problem of file system do not match: If you have recently restored your hard disk from a backup, check if there is an updated version of the backup/restore program available from the manufacturer. Make sure that the latest Windows Service Pack is installed.

  STOP: 0XC000021A<-- read="" this="">
  * 1314.html http://www.faultwire.com/solutions-fatal_error/Status-System-Process-terminated-0xC000021A-

  -----------------------------------------------------------------------

  Look in the Event Viewer to see if something is reported on those.
  http://www.computerperformance.co.UK/Vista/vista_event_viewer.htm

  MyEventViewer - free - a simple alternative in the standard Windows Event Viewer.
  TIP - Options - Advanced filter allows you to see a period of time instead of the entire file.
  http://www.NirSoft.NET/utils/my_event_viewer.html

  -------------------------------------------------------------------------

  It's my generic bluescreen convenience store - you can try Mode safe mode as suggested in article
  above - repeatedly press F8 that you start. Disks of Vista are probably necessary - if you do not try to repair it, you can borrow a friends because they are not protected against copying. You can also buy the physical disks
  good system machine cheap that you already own Windows (you have to reinstall them if)
  required). You can also repair disks on another computer.

  Here are a few ways to possibly fix the blue screen issue. If you could give the blue screen
  info that would help. Such as ITC and 4 others entered at the bottom left. And all others
  error information such as codes of STOP and info like IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.

  As examples:

  BCCode: 116
  BCP1: 87BC9510
  BCP2: 8C013D80
  BCP3: 00000000
  BCP4: 00000002

  or in this format:

  Stop: 0 x 00000000 (oxoooooooo oxoooooooo oxoooooooo oxooooooooo)
  Tcpip.sys - address blocking 0 x 0 00000000 000000000 DateStamp 0 x 000000000

  It is an excellent tool for displaying the blue screen error information

  BlueScreenView scans all your minidump files created during "blue screen of death," collisions
  Displays information on all the "crash" of a table - free
  http://www.NirSoft.NET/utils/blue_screen_view.html

  BlueScreens many are caused by old or damaged, in particular the video drivers drivers however
  There are other causes.

  You can do mode if necessary safe or the Vista DVD command prompt or
  Options recovery if your system is installed by the manufacturer.

  How to start on the System Recovery Options in Windows 7
  http://www.SevenForums.com/tutorials/668-system-recovery-options.html

  You can try a system restore to a point before the problem started when one exists.

  How to do a system restore in Windows 7
  http://www.SevenForums.com/tutorials/700-system-restore.html

  -------------------------------------------------------------------------

  Start - type this in the search box-> find COMMAND at the top and RIGHT CLICK – RUN AS ADMIN

  Enter this at the command prompt - sfc/scannow

  How to fix the system files of Windows 7 with the System File Checker
  http://www.SevenForums.com/tutorials/1538-SFC-SCANNOW-Command-System-File-Checker.html

  How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
  generates cbs.log Windows Vista (and Windows 7)
  http://support.Microsoft.com/kb/928228

  The log can give you the answer if there is a corrupted driver. (Says not all possible
  driver problems).

  Also run CheckDisk, so we cannot exclude as much as possible of the corruption.

  How to run the check disk at startup in Windows 7
  http://www.SevenForums.com/tutorials/433-disk-check.html

  -------------------------------------------------------------------------

  Often drivers up-to-date will help, usually video, sound, network card (NIC), WiFi, part 3
  keyboard and mouse, as well as of other major device drivers.

  Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
  http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htm

  Installation and update of drivers under Windows 7 (updated drivers manually using the methods above
  It is preferable to ensure that the latest drivers from the manufacturer of system and device manufacturers are located)
  http://www.SevenForums.com/tutorials/43216-installing-updating-drivers-7-a.html

  How to disable automatic driver Installation in Windows Vista - drivers
  http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
  http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx

  -------------------------------------------------------------------------

  How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
  quit unexpectedly
  http://support.Microsoft.com/kb/958233

  Troubleshooting Vista Blue Screen, error of JUDGMENT (and Windows 7)
  http://www.chicagotech.NET/Vista/vistabluescreen.htm

  Understanding and decoding BSOD (blue screen of death) Messages
  http://www.Taranfx.com/blog/?p=692

  Windows - troubleshooting blue screen errors
  http://KB.wisc.edu/page.php?id=7033

  -------------------------------------------------------------------------

  In some cases, it may be necessary.

  Startup Options recovery or Windows 7 disk repair

  How to run a startup repair in Windows 7
  http://www.SevenForums.com/tutorials/681-startup-repair.html

  How to start on the System Recovery Options in Windows 7
  http://www.SevenForums.com/tutorials/668-system-recovery-options.html

  How to create a Windows 7 system repair disc
  http://www.SevenForums.com/tutorials/2083-system-repair-disc-create.html

  I hope this helps.

  Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.

• I have a black screen with cursor before logon for Windows 7, 32-bit. Help, please.

  Tried to start in safe mode & start the laptop very well, but once I went back to the startup by default, face the same problem again.

  Hello

  Take a look at this thread and follow the same steps listed in the breast.

  http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-system/Windows-7-boots-to-black-screen-with-cursor-before/531df029-0dac-4392-9efe-1d35714cf136

  In particular, the bit on a SFC/scannow. Sometimes when you unplug a PC like that, you can damage some essential Windows files. A SFC scan should be able to fix it.

  This link contains a lot of other really good as well troubleshooting procedures.

  I hope this helps.

• Black screen with cursor

  Problem:

  Windows startup but stuck on the black screen with cursor

  System:

  E7440 Dell with Windows 7 Pro

  Description:

  E7440 has a ssd msata 250g installed with an msata to sata adapter. Hard drive's MBR mode. The system works well on Windows 7 pro. E7440 comes with an msata slot, so I removed the adaptor and connect directly on the slot msata ssd. Then the black screen with cursor problem happened. Put the adapter back with ssd and Windows 7 booted up normally.

  I made a disk image of the ssd adapter so that Windows 7 is running, then restore the image to a disk sata hard. The black screen problems are out again.

  Safe mode works normally. Low screen resolution does not solve the problem.

  I also tried to copy of ssd hard disk drive, but Windows boot had another problem: session3_initialization_failed.

  Any help is appreciated.

  Hello

  Thanks for posting your query on the Microsoft Community.

  According to the description, I understand that you get a black screen with cursor.

  I suggest you to refer to the suggestions of Nithyananda J replied on January 6, 2010 and check if that helps.

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_other-update/Windows-7-black-screen-with-mouse-cursor-in-normal/9fea95dc-7dd6-415e-BBC2-7115311c196c

  You can also check:

  http://answers.Microsoft.com/en-us/Windows/Forum/all/Win7-wont-boot-black-screen-with-blinking-cursor/1b4b501a-6722-446c-8275-c1c568f275b4

  Hope this information helps. Please let us know if you need any other help with Windows in the future. We will be happy to help you.

• Windows Vista will not start up - keep getting the black screen

  I read through the questions answered similar questions and still can not past the black screen with windows vista.  It's on a dell inspiron 1525.  Also, it does not start in safe mode and I tried booting from the last good configuration and is still stuck on the black screen.  This just started a few days ago, and the computer was working fine until this date.  Can you help me?

  Hi Jimazona,
   
  1. from when are you facing this problem?
  2. any change in software or new hardware on your computer?
    
  Method 1:
    
  First of all I suggest you to disconnect all devices external one except keyboard and mouse and try to start your computer and check.
       
  Method 2:
      
  I also suggest you perform a startup repair and check if this solves the problem.
     
  Follow the steps below:
     
  a. Please insert the Windows Vista DVD and restart the computer.
  b. when we are asked to press a key to boot from the DVD, please press enter or the SPACEBAR.
  c. Select your language settings, and then click Next.
  d. click on repair your computer.
  e. Select the operating system you want to repair, and then click Next.
  f. in the System Recovery Options menu, click Startup Repair. Startup Repair can invite you to make choices as it tries to solve the problem, and if necessary, it may restart your computer, because it makes the repairs.
   
  Access the link below for more information on the Startup Repair:
  Startup Repair: frequently asked questions
  http://Windows.Microsoft.com/en-us/Windows-Vista/startup-repair-frequently-asked-questions
   
  See also:
   
  http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/24b44a01-872e-4d87-867f-ed01a3579031/   
   
  I would like hearing that the results back on your part about what happened after trying each method.

  Thank you, and in what concerns:
  I. Suuresh Kumar - Microsoft technical support.

  Visit our Microsoft answers feedback Forum and let us know what you think. 
  

• Windows 8 will not start black screen.

  It has been three days, I've tried everything I can find. I start my computer, I see the screen with the icon where you sigh, it loads and I get a black screen with a mobile cursor.

  Any help I see is to go to this or that on desktop and run everything that... I CAN'T go to my office. I can't start a backup drive (managed to get a copy, because the computer did not come with one) without getting through desktop Start menu. I can't do it in safe mode without going through the menu through my office... What am I supposed to do when ALL I get is a black screen? No amount of ctrl + alt + del or restart lead me anywhere I try to reboot and I'm frozen on a blue screen that says loading. I hard reboot and I'm back to the black screen.
  I would just reinstall, but the computer came preloaded so I don't have the keys.
  Someone help me please!
  F8 and all other combos keys that I found online, do nothing, pull up no menus, still called gateway and they said tapping deletes during the power upward would pull up the menu bridge... nothing.

  Well, I discovered something that many people do not know apparently. I called gateway and he was telling me what to do, get a crazy thought I was doing it wrong. All I had to do was press DELETE to get their menu upwards, but every time I did it I did have 'no signal' on my screen. After a huge clothing "Yes, my screen is plugged! When I don't type at least something shows to the top, etc etc... "he gave up and told me to drop it.

  What I realized: you can't get through all the menus with a connected graph card. I don't know why I didn't think, in retrospect, that should be obvious, at least to a person in the forums help much, I went.
  If you have a similar problem make sure that you are using onboard graphics (which means completely disconnect all other cards manually). Only then can come bios.
  Arrived, made a fast start, has managed to get malwarebytes running and had 11 malicious files. How my boyfriend or I took those up is still a mystery, it's funny I did some quick tests every morning and they come clean. Guess I have to do a full analysis more often.

• Windows starts, but does not charge not (black screen with cursor)

  [Sorry for the long post, but I feel the need to explain my situation]

  I have the following problem:

  I turn on my PC, and Windows shows it is normal loading screen, then it goes in a completely black screen, with just the mouse in the middle. By the size of the cursor, I can say that it is in a low resolution, probably 800 x 600 (compared to my usual 1920 x 1080). I am able to movements of the mouse, but with no particular purpose without something to click on. No other keyboard input seems to work, except for press SHIFT 5 times, which shows the keys dialog box to self-retaining (with just 'yes' or 'No' options, no other connection); and Windows key + U, which shows the ease of access Center. CTR + Alt + Del does NOT work.

  So far, that's what I tried (in chronological order):

  1. Start in Safe Mode, Safe Mode with network, safe mode with command prompt Mode, start low resolution video, last known good configuration: all give the same result as to start normally.
  2. Repair of your computer:
     1. Startup Repair: find the registry errors (I realized and fixed this more later on)
     2. System Restore: did not find any previous restore points (I know with certainty that there is, I took the habit of making regular restore points).
     3. Windows memory diagnostic: not found error.
     4. Command prompt:
        1. Ran the command chkdsk /f r, has no error report.
        2. Ran sfc/scannow: I don't remember the exact report, but he asked to restart the computer to complete the repair of the problems. I rebooted and ran the new order for the same result.
        3. Forced the scan with: sfc/scannow damaged = c: \ /offwindir = c:\windows, concluded and repair errors, not always not load windows.
  3. Ran Dell Diagnostics start, found no errors.
  4. Startup Repair ran found once again the registry errors. I found the solution to this in a forum for Microsoft Help ( answers.microsoft.com/.../f77d5355-b8be-41d6-af24-cae994e1768f ) and fixed the problem. I rebooted, but the problem persists.
  5. Startup Repair does not detect now no error. I tried restoring the system again, we find 2 restore points dated AFTER the beginning of my problem. I decided to restore it in any case, but none of them worked.
  6. I ran Windows Defender in offline mode:
     1. Quick scan: and found 2 threats and remove.
     2. Full system scan: found 4 more threats, removed 2 of them, the other two could not be removed because they were in an ISO file.
  7. I've tried steps 1, 2 and 3 with no luck.

  With every step, I am aware that I am closer to having to reinstall Windows, then I decided to see if I could still access my HD to save my personal files. I did a live Linux CD (with Ubuntu), but I have a problem of mounting the readers, because they are in a RAID0 configuration. "sudo dmraid s" gives the following error: "ERROR: Sie: number of devices in RAID wrong value"isw_dbdffjficc_ARRAY0"[1/2] on/dev/sdb.

  Important details:

  I changed my graphics about 4 months ago (a 750ti of Nvidia GTX for an ATI Radeon HD 6450), and told me that I can run short with the power supply. The new card requires a minimum of 450W, and I think that my diet is 460W. This may or may not have something to do with this question, I have no idea.

  My 2 hard drives of 500 GB RAID0 configuration has brought me a lot of problems of the day 1. One of the HARD drive would be randomly (I am able to hear a clicking sound different when this happens) failure and the computer would break. At the start, he would ask a boot device. The Dell boot utility would then recognize only 1 readers, but would end without errors. After a reboot or two, everything would be fine and would be boot windows normally (apart from the usual error recovery screen) with no sign of corrupted data or anything. As I said, it happened are the arrival of my PC, but restarting a couple of times still attached. From now on, the two HD seems to work very well, the Dell utility recognizes two of them and found no errors in one of them, and I can access any directory from the command prompt.

  Is there anything else I should try before reinstalling Windows?

  Before the installation, I really wish I could recover my files (I have important documents of the College), is it possible to do this?

  Sorry again for the very long post (and for any errors of language, English is not my native language) and thanks in advance.

  Since you have not yet had your data readers. I recommend a Windows installation without formatting the drive... I don't like this solution, but at this point, you have probably tried everything.

  Use a reinstallation of Windows 7 installation DVD, make sure that you select...

  Select custom: Install Windows only (Advanced)

  

  If you do not select one of the route options and everything simply highlight the largest partition and click Next:

  

  Windows will dump all the old Setup files into the Windows.old folder