My computer will not start - ntoskrnl.exe is missing

Similar Questions

• Computer will not start at the top. I was first getting a 'file problem' message on nv4_mini.sys. After finding that someone else had...

  Computer will not start at the top. I was first getting a 'file problem' message on nv4_mini.sys. After finding that someone else had the same problem and I responded went to try the solution but then started to get the message that the file: \windows\system32\config\system is missing or corupted. Have tried to do where I could start up in safe mode and cannot. Tried to boot from the installation CD, but when I try to make the system recovery and choose the system to recover nothing happens. This isn't regarding the password. I have a Dimension 4500 XP sp3

  Hi BrianJ641,

  Follow the steps in the article.

  http://support.Microsoft.com/kb/307545

  Note: When you are prompted to type the administrator password, you can type if you set the password. If the administrator password is blank, just press ENTER.

• Virus deleted and now the computer will not start... I get the blue screen with an error that says STOP: 0x0000007B (0xB84C3524, 0xC000000E, 0x00000000, 0x00000000) what is the problem? !!

  Virus deleted and now the computer will not start... I get the blue screen with an error that says STOP: 0x0000007B (0xB84C3524, 0xC000000E, 0x00000000, 0x00000000) what is the problem? !!

  Hi ipitedafoo,

  You can check if this article helps.

  Advanced troubleshooting of errors "Stop 0x0000007B" in Windows XP

  See also:

  Error message "STOP 0x0000007B" when you restart your Windows XP-based computer

• Computers button just flashes and the computer will not start

  Computer on button just flashes continually and the computer will not start.  I unplugged everything and put it back together.  Same thing.  Nothing.  Monitor is on, but nothing on the screen, of course, because the computer does not start at the top.

  Computer on button just flashes continually and the computer will not start.  I unplugged everything and put it back together.  Same thing.  Nothing.  Monitor is on, but nothing on the screen, of course, because the computer does not start at the top.

  Hey Bowers

  you get a splash screen on startup with an acer for hp dell etc. or the logo of the motherboard

  otherwise, it would seem that you have a hardware problem

  Contact the manufacturer of the computer or a local reputable computer repair workshop

  Walter, the time zone traveller

• AFTER YOU INSTALL SERVICE PACK 1 FOR WINDOWS VISTA, MY COMPUTER WILL NOT START SAYS UNATTENDED, DLL

  AFTER YOU INSTALL SERVICE PACK 1 FOR WINDOWS VISTA, MY COMPUTER WILL NOT START SAYS UNATTENDED, DLL

  Follow these steps to try to solve your problems of boot.

   

  Restore point:

  http://www.howtogeek.com/HOWTO/Windows-Vista/using-Windows-Vista-system-restore/

  Do Safe Mode system restore, if it is impossible to do in Normal Mode.

  Try typing F8 at startup and in the list of Boot selections, select Mode safe using ARROW top to go there > and then press ENTER.

  Try a restore of the system once, to choose a Restore Point prior to your problem...

  Click Start > programs > Accessories > system tools > system restore > choose another time > next > etc.

  http://www.windowsvistauserguide.com/system_restore.htm

  Read the above for a very good graph shows how backward more than 5 days in the System Restore Points by checking the correct box.

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   

  If the system or Mode restore safe work not and you do not have a Microsoft Vista DVD, make a repair disc to do a Startup Repair:

  Download the ISO on the link provided and make a record of repair time it starts.

  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.

  When you have changed that, insert the Bootable disk you did in the drive and reboot.

  http://www.bleepingcomputer.com/tutorials/tutorial148.html

  Link above shows what the process looks like and a manual, it load the repair options.

  NeoSmart containing the content of the Windows Vista DVD 'Recovery Centre', as we refer to him. It cannot be used to install or reinstall Windows Vista, and is just a Windows PE interface to recovering your PC. Technically, we could re-create this installation with downloadable media media freely from Microsoft (namely the Microsoft WAIK, several gigabyte download); but it is pretty darn decent of Microsoft to present Windows users who might not be able to create such a thing on their own.

  Read all the info on the website on how to create and use:

  http://NeoSmart.net/blog/2008/Windows-Vista-recovery-disc-download/

  ISO Burner:http://www.snapfiles.com/get/active-isoburner.html

  It's a very good Vista startup repair disk.

  You can do a system restart tool, system, etc it restore.

  It is NOT a disc of resettlement.

  And the 32-bit is what normally comes on a computer, unless 64-bit.

  See you soon.

  Mick Murphy - Microsoft partner

• Vista - computer will not start without the disc

  loaded vista on my computer - now computer will not start without the disc

  Went into my bios as suggested to check the boot order - and, Yes, I got HDD1 as first boot then CD - but then I remembered something I had seen earlier on my computer - it was on the list the HD which had my system like HDD0 files - so, I checked and there it was - listed option HDD0 so I changed HDD1 of HDD0 and was able to boot my computer without the disk system.  Hope this helps someone else with the same prob.

• computer will not start with the disc

  I use vista and my computer does not start because of a corrupted file.

  I put my vista disk in such suggested, but the screen does not move any command of keys to press and just goes round in a loop. So I can't the computer to start and fix.

  I changed the bios to boot from the cd as first choice but still no results.

  can anyone help?

  Could it be that the disk driver does not work like the disk isn't loading? Or the disc will not load because the press any key order is not coming?

  I am old enough and not very technically experienced but this computer has served me well and I have a lot of information that I need to go down there if I have to buy another.

  Any help would be greatly appreciated.

  If you have correctly setting the boot order in the BIOS to CD/DVD first, and the computer does not start, your problem has nothing to do with the driver for the CD/DVD drive. Also running in safe mode or SFC can maybe help you.

  The reason that pilots, safe mode and FCS can help you is the same for all three: boot (if from the hard drive or a CD or DVD) takes place before loading Windows. If it boots from a CD or a bootable DVD, the problem has nothing to do with Windows. It's a hardware problem. I don't know what the problem is, but it is possible that the CD/DVD drive is dead.

  What is wrong can but fixable, but whether it is cost-effective to do so is another matter. It depends on what the problem is. If the CD/DVD player, they are inexpensive, so replacement should not be expensive. Fortunately, it's not like there is a problem with the hard drive, so even if you buy a new computer, you must be able to remove the hard drive from the old computer, put it in an external enclosure and to transfer the data to the new computer.

  Let me add another point: you say "I have a lot of information that I need to get off it if I have to buy another." This suggests that you don't regularly back up your data on an external support. If this is the case, you've played with fire. It is always possible that a hard disk crash, the user error, close to love at first sight, virus attack, even stolen computer, can result in the loss of everything on your drive. As it has often been said, it is not a question of whether you will have a problem, but when.

• Computer will not start normally - boots to the BIOS boot screen

  Hi, today I had problems on my computer and it will not start normally upward. This started happening today. When I turn on the monitor, the HP logo appears on a blue screen (as usual), but then, there are a lot of vertical white lines grouped perfectly on the screen (it's never happened before) he started to arrive yesterday. and when I try to start it, there is just a black screen for a long time and sometimes the system recov appears but it takes SO long to finish so I just stopped and went into safe mode and did a quick scans with Malwarebytes, MS Security Essentials and SUPERAntiSpyware, but they are all come clean except SUPER which came with a few things from tracking cookies...

  Today, I have scanned a full scan with malwarebytes and it says that there is no infection.

  can someone help me? I'm at the library atm! Thank you!

  Picture of the blue screen with lines here: http://img638.imageshack.us/img638/8583/post1278441253416372.jpg

  also - im wondering how to start with recov disks? I have two drives but only as on slot dvd thing and I know to start upward with her? should I boot with it because the layout is a little down? and I don't have an installation disc windows vista then Yes.

  Thank you very much!

  Hello Winston,

  According to the image that you posted, it seems that the blue screen is a blue screen with the HP logo on the subject.

  If this is the case, then the machine has not yet reached Windows and is suspended in the machine Power On Self Test.

  My recommendation for this scenario is to contact HP about what there is something at the level of the material / process/firmware BIOS which prevents the machine to get it to start Windows Vista.

  Let us know what they have to say.

  Best regards

  Matthew_Ha

• When you try to install Windows XP I deleted some unwanted partitions on my hard drive and now my computer will not start.

  original title: file system

  Finally, I tried to install a new xp on my pc, I had to remove some unwanted parttions and trying so I deleted some system files and its caused me

  problems with my laptop will not start again.

  I try to boot from a cd, but it keep posting so tat files cannot be copied. to restart and boot from the system itself is not also possible.

  I got a copy of my xp on a USB but I can't get my laptop to boot from it

  I need help badly thanks

  pc files cannot copy

  Cannot copy the Office

  Win87.em

  Win_dos-chm

  Windows.hlp

  WinHelp.exe

  WinHelp.hlp

  wininstP.chm

  WMIC.chm

  wmifltrlW.chm

  wmiscmgr.dll

  windW.chm etc.

  Sonyvaio11, xp professional

  Hello

  not all motherboards were Boot from USB active

  Make sure to set the ot of CD/DVD drive USB key to be 1st in the boot order to boot from the XP disc

  to boot from the dvd drive to be able to you will see a way to get into the bios Setup at the bottom of the screen or command menu start

  It would be F2 or delete etc to enter the BIOS or F12 etc. for the start menu

  Change boot order it do dvd drive 1st in the boot order

  http://helpdeskgeek.com/how-to/change-boot-order-XP-Vista/

  How to clean install XP

  http://pcsupport.about.com/od/OperatingSystems/SS/instxpclean1.htm

  ___________________________________________________________

  Here is the vista forums

  Try the forums xp on the link below

  http://answers.Microsoft.com/en-us/Windows/default.aspx#tab=4

  Answers by topic

  • Office & Customization
  • Files, folders, & search
  • Game
  • Hardware drivers &
  • Install, upgrade, and activate
  • Internet Explorer
  • Music & Sound
  • Networking, mail, electronic, & updated online
  • Maintenance & performance
  • Photos & Video
  • Programs
  • Security, privacy, and user accounts
  • System repair & recovery
  • TV and movies on Windows
  • Windows Update

• Computer will not start with Windows. I get a black screen and a blinking cursor.

  Windows XP Home Edition startup problem

  I have Windows XP Home Edition, but the computer does not start at the top.  I get a black screen and a blinking cursor.  I have an XP installation disc.  I was in the Recovery Console to recover all of the standard tasks, but nothing helped.

  Brand, model and model number of your PC?

  Are you able to get into the BIOS?
  What took place prior to this problem?
  For now, you can read this to get some ideas:
  http://tips4pc.com/computer-problems/my-computer-boots-up-to-a-black-screen-with-a-flashing-cursor.htm

• My computer will not start, getting warning that the iertutil.dll is missing for Internet Explorer

  Anyone know how to fix this problem? I get a warning saying that the iertutil.dll file is missing for internet explore. When I start my computer, all I get is my screensaver with no office. The only way I can continue any part of my computer is to go to alt del to get to the control task manager.

  Do you mean you see a message like this:

  Explorer.EXE - unable to locate component
  This application has failed to start because iertutil.dll was not found. Reinstalling the application may fix this problem.

  That file should never be missed and it takes an extra effort to remove it on purpose because there are one of 3498 files who cares about Protection of file Windows (WFP).

  If explorer.exe is not running, all you will see is your screen background image.

  The file is in this folder (assuming that XP is installed on your C drive):

  c:\Windows\System32

  Since you can get into the Task Manager do the following:

  Since the Task Manager, click file, new task (run...) and then click Browse and navigate to this folder:

  c:\Windows\System32\dllcache

  If you are unable to find or do not see the dllcache folder, because your system is not configured to display hidden files and folders, simply type the path to the folder name in the "Open:" box

  c:\Windows\System32\dllcache

  Make sure the "Files of type" box is set to show all files (or you will not see any), and then click OK to display all files.

  Locate copy the iertutil.dll file backup in the folder c:\windows\system32\dllcache, made a right click and copy and go back up a folder c:\windows\system32, right-click in an empty area and paste the file there.  Answered in the affirmative if invited to replace the existing file.

  If you can't find the file in the dllcache folder (should be), depending on your installation, there may be a copy of the file on your system in this folder:

  c:\windows\ServicePackFiles\i386

  If you find there, copy the file missing from there and paste it where it belongs

  It is possible that some malicious software or your antivirus/antimalware indeterminate quarantined (actually deleted) the right file and the backup copy of which must be in the dllcache folder.

  In this case, you can download a copy of my SkyDrive and use networks disks (on foot) to bring it to the system afflicted on a USB key or a floppy disk.

  You may be able to 'Run' iexplore.exe in the Task Manager to get on the Internet and just download it.

  I downloaded a copy of XP Pro SP3 file you need on my SkyDrive (everyone has a SkyDrive for file sharing).

  You can download it and when you do, place a copy of the file in these two folders (assuming that Windows is installed on your C drive):

  c:\Windows\System32
  c:\Windows\System32\dllcache (this is where XP keeps backups of important files).

  Here is the link to my SkyDrive and you can get the file you need here:

  http://CID-6a7e789cab1d6f39.SkyDrive.live.com/redir.aspx?RESID=6A7E789CAB1D6F39! 311

  When you see the files available for download, you will not see the extension of file (.exe, .dll, .cpl, .sys, etc), but when download you them they will have the right extension.

  When you download the file (especially if you use Internet Explorer), when you get a chance to save the file, it cannot save the file with an extension (for example, .exe, .dll, .cpl, .sys) then you will need to manually add the extension appropriate to the file when you download the file before you save it.

  You can download the file without the extension, and then rename the file to add the appropriate extension.  You do not want to use a file called rundll32 when the name of the file should really be called rundll32.exe (if the downloaded file has no extension, you will need to change the name of the file to add the appropriate extension to make it work.

  You then put the downloaded files in the correct folders on your system.

  That may not solve all your problems, but at least you will be spending this part and we can then fix the rest.

  Since it is all very suspicious to meI would follow with this:

  Download, install, update and do a full scan with these free malware detection programs at:
  Malwarebytes (MMFA): http://malwarebytes.org/
  SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
  They can be uninstalled later if you wish.
  Restart your computer and solve the outstanding issues.

• Computer will not start correctly even after rebooting.

  1. repairs to start but the same problem occurs again the next time the computer is turned on.

     OT: Startup Repair work and its working properly and then works the next time its switched on. but more often the computer will start up again and the restart process everything must be done again

  Hi David,

  Method 1
  Step 1: I suggest to start the computer in safe mode and check if the problem persists.

  Start your computer in safe mode
  http://Windows.Microsoft.com/en-us/Windows-Vista/start-your-computer-in-safe-mode

  Step 2: If the problem is solved in safe mode, then I suggest you perform the clean boot and remove the program that is causing the problem.

  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
  http://support.Microsoft.com/kb/929135
  Note: Follow step 7 clean boot KB929135 article to reset the computer in normal mode.

  Method 2
  I suggest you try the steps from the following link:

  What to do if Windows does not start correctly
  http://Windows.Microsoft.com/en-us/Windows-Vista/what-to-do-if-Windows-wont-start-correctly

  Method 3
  I suggest you try the steps from the following links:

  Windows Vista or Windows 7 unbootable, and the Startup Repair tool does not resolve the problem
  http://support.Microsoft.com/kb/934540

  How to use the Bootrec.exe tool in the Windows recovery environment to troubleshoot and repair startup issues in Windows
  http://support.Microsoft.com/kb/927392

• Missing or corrupt hal.dll file. Computer will not start in XP

  All of a sudden my computer does not open in XP.  Says it has a corrupt or missing hal.dll file I don't ' have a Windows XP CD.  What I can to correct without losing what is on the computer?  Must have been an update last night, because it was working fine before.

  The usual problem with this message is not the hal.dll file is missing or corrupted - it usually just means that XP cannot find it to be abandoned because the file system has somehow got corrupted something like a power interruption, restart or abnormal termination... or your c:\boot.ini file is somehow corrupted (or both!).

  You will have to start on something to fix.

  Since the Microsoft Answers forum does not have any kind of information system request when a new question is asked, we know absolutely nothing about your system.  Not knowing the basic information a problem prolongs the frustration and the agony of these issues.

  Thank you MS Answers, allowing the resolution of simple problems as frustrating and a lot of time as possible.

  Provide information on your system, the better you can:

  What is your system brand and model?

  What is your Version of XP and the Service Pack?

  Your system have IDE or SATA disks?

  Describe your current antivirus and software anti malware situation: McAfee, Symantec, Norton, Spybot, AVG, Avira!, MSE, Panda, Trend Micro, CA, Defender, ZoneAlarm, PC Tools, Comodo, etc..

  The question was preceded by a loss of power, aborted reboot or abnormal termination?  (This includes the plug pulling, power buttons, remove the battery, etc.).

  The afflicted system has a working CD/DVD (internal or external) drive?

  If the system works, what do you think might have changed since the last time it did not work properly?

  Then, you perform a chkdsk/r from the XP Recovery first Console and report back how it works (which may be all you need to do):

  Here's how:

  If you have no XP bootable media (or aren't sure you have) create a bootable XP Recovery CD of Console and do not forget.

  This is not the same as recovery disks that might have come with the acquisition of the system store.

  You can make a bootable Recovery Console CD by downloading an ISO file and burn it to a CD.

  The ISO bootable image file you need to download is called:

  xp_rec_con. ISO

  Download the ISO from here:

  http://www.mediafire.com/?ueyyzfymmig

  Use a new CD and this simple and free program to burn your ISO file and create your bootable CD:

  http://www.ImgBurn.com/

  When you install ImgBurn, DO NOT install the Ask toolbar.

  Here are some instructions for ImgBurn:

  http://Forum.ImgBurn.com/index.php?showtopic=61

  It would be a good idea to test your bootable CD on a computer running.

  You may need to adjust the computer BIOS settings to use the CD-ROM drive as the first device to boot instead of the hard drive.  These adjustments are made before Windows tries to load.  If you miss it, you will need to restart the system again.

  When you start on the CD, follow the instructions:

  Press any key to boot from CD...

  Installing Windows... going to pronounce.

  Press 'R' to enter the Recovery Console.

  Select the installation that you want to access (usually 1: C:\WINDOWS)

  You may be asked to enter the password (usually empty).

  You should be in the folder C:\WINDOWS.  It's the same as the

  C:\Windows folder that you see in Solution Explorer.

  The Recovery Console allows base as file commands: copy, rename, replace, delete, chkdsk, fixboot, fixmbr, cd, etc.

  For a list of the commands in the Recovery Console, type help at the prompt of commands or read on here XP Recovery Console:

  http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/recovery_console_cmds.mspx?mfr=true

  A good idea before you start things must first verify the integrity of your file system by using the chkdsk command.

  In the command prompt window, run the chkdsk command on the drive where Windows is installed to try to fix any problems on the afflicted player.

  Running chkdsk is fine, even if he finds no problem.  It won't hurt anything to run it.

  Assuming your boot drive is C, run the following command:

  CHKDSK C: /r

  Let chkdsk finish to correct the problems, he could find.

  It may take a long time for chkdsk complete or they seem to be "stuck".  Be patient.  If the HARD drive led blinks always, chkdsk is something.  Keep an eye on the amount of the percentage to be sure that it is still making progress.  It may even seem to go back sometime.

  You must run chkdsk/r again until it finds no error to correct.

  Remove the CD, and then type "exit" to exit the RC and restart the computer.

  You have not to set the BIOS to boot the disk HARD since the CD won't be.

• Computer will not start after windows checkdisk thing?

  My office has gone through a few microsoft checkdisk thing today (16\11\2010), and after that it's over, my com could not start more.

  It would be to start all the way until the logo Windows XP there and after loading was done and usually, it would be a blue screen with your user account, but however he just showed a black screen and I waited a certain 20 minutes and nothing happened.

  Then, I tried to reboot 10 times over and always to the same black screen.

  When I tried the thing Safe Mode would stop any loading at some point of the code, which is

  multi (0) disk (0) rdisk (0) partition (1) \WINDOWS\system32\DRIVERS\agp440.sys

  That's what was on my setup on my desktop that I accessed:

  "Primary Master" > Hitachi HDP72502
  Primary slave > no
  Secondary master > HL - DT - ST GCE-852
  Secondary slave > HL-DT-STDVD-ROM

  Basic version of the BIOS > V6.0
  Revision of BIOS 3.25 23/09/2003

  Anyone know what is happening and how can I solve this problem?

  In the Boot Options menu advanced F8, choose this option and describe the results:

  Disable the automatic restart in the event of system failure

  Let us know if you do not see this option in the Advanced Boot Options menu.

  You will not get far if you can't start something, so if you have a CD/DVD player, do you have a bootable XP Recovery Console in order to have room for manoeuvre, boot on the CD, run chkdsk /r and then you can start solving the problem (instructions below).

  You are once started in the Console recovery XP and after running chkdsk/r, then you will be able to see if KB324764 will help you.

  Please provide additional information on your system:

  What is your system brand and model?

  What is your Version of XP and the Service Pack?

  Describe your current antivirus and software anti malware situation: McAfee, Symantec, Norton, Spybot, AVG, Avira!, Defender, ZoneAlarm, PC Tools, MSE, Comodo, etc..

  If you have no XP bootable media (or aren't sure you have) create a bootable XP Recovery CD of Console and do not forget.

  This is not the same as recovery disks that may have come to a store to purchase the system.

  You can make a bootable Recovery Console CD by downloading an ISO file and burn it to a CD.

  The ISO bootable image file you need to download is called:

  xp_rec_con. ISO

  Download the ISO from here:

  http://www.mediafire.com/?ueyyzfymmig

  Use a new CD and this simple and free program to burn your ISO file and create your bootable CD:

  http://www.ImgBurn.com/

  Here are some instructions for ImgBurn:

  http://Forum.ImgBurn.com/index.php?showtopic=61

  It would be a good idea to test your bootable CD on a computer running.

  You may need to adjust the computer BIOS settings to use the CD-ROM drive as the first device to boot instead of the hard drive.  These adjustments are made before Windows tries to load.  If you miss it, you will need to restart the system again.

  When you start on the CD, follow the instructions:

  Press any key to boot from CD...

  Installing Windows... going to pronounce.

  Press 'R' to enter the Recovery Console.

  Select the installation that you want to access (usually 1: C:\WINDOWS)

  You may be asked to enter the password (usually empty).

  You should be in the folder C:\WINDOWS.  It's the same as the

  C:\Windows folder that you see in Solution Explorer.

  The Recovery Console allows base as file commands: copy, rename, replace, delete, chkdsk, fixboot, fixmbr, cd, etc.

  For a list of the commands in the Recovery Console, type help at the command prompt.

  Start by checking the integrity of your file system by using the chkdsk command.

  In the command prompt window, run the chkdsk command on the drive where Windows is installed to try to fix any problems on the afflicted player.

  Running chkdsk is fine, even if he finds no problem.  It won't hurt anything to run it.

  Assuming your boot drive is C, run the following command:

  CHKDSK C: /r

  Let chkdsk finish to correct the problems, he could find.  It may take a long time for chkdsk complete or they seem to be "stuck".  Be patient.  If the HARD drive led blinks always, chkdsk is something.  Keep an eye on the amount of the percentage to be sure that it is still making progress.  It may even seem to go back sometime.

  You must run chkdsk/r again until it finds no error to correct.

  Remove the CD, and then type "exit" to exit the RC and restart the computer.

  You have not to set the BIOS to boot the disk HARD since the CD won't be.

  Do, or do not. There is no test.

  I need YOUR voice and the points for helpful answers and propose responses. I'm saving for a pony!

• can not start my computer - computer will not start

  I am a student online and my office holds the key to my future. I'm running on windows vista edition Home premium 32-bit with a processor intel core 2. My two year old son has done something to my computer and told me that he broke. Don't know what he was doing. The following is a list of things my screen appears with a background dark: CHKDSK checks the files. step 1 of 3 206016 file records processed.file audit. 15859 large file cases. 0 incorrect file records processed. 0 EA records processed. 66 analysis of files. CHKDSK checks the index. step 2 of 3. an unspecified error has occurred. (at this point I wasn't able to my device by the power switch.) After ttempting manual start in the start menu the following is what my screen read: no available boot device. Press ENTER to try again. SATA-0: installed, sata-1: installed, sata-4: none, sata-5: No. Since I was able to power down my unit by the switch of power supply with the following message appears on the screen after turning on back: windows Boot Manager: windows has encountered a problem communicating with a device connected to your computer. This error can be caused by unplugging a removable storage device or an external usb all in use or by defective hardware such as a hard drive which is a failure. Make sure any removable storage device is connected properly, restart the computer. File: \boot\BCD status: 0xc00000e9 Info: an unexpected i/o error has occurred. After restarting my computer, it is what appears on my screen after the initial screening that says f2-set upward and the f12 boot menu. Can you please help me because it is an academic emergency computer repair. I don't know what my son has done or how to reverse the trend, Please HELP me. I'm not even an option to use the repair option more start. I had the option 2 days ago and after four hours of startup repair still worked. I assumed that he froze right there and powered down in my unit. Now, I can't even the ability to use the startup repair program more. My screen never changes to black with messages named and will does not start somehow. I was still not able to find a safe mode at startup. I can not get to a sign of the user on the screen or anything. PLEASE HELP ME!

  You must have a disk then you can go to the recovery console, or do a repair install of windows OS.