Replace a deleted system file

Similar Questions

• Help! Virus deleted system files

  When I went to a Web site, I suddenly received warnings of virus and I did a hard reboot to stop all activity.  When my computer is back, a virus had control of Internet Explorer and it kept popping up small balloons of warning.  I disabled the modem to prevent the virus to assess more resources online.  Using the Task Manager, I decided that a process called av.exe was responsible and I closed it (I run AVG, but it had been wound up).  Then I went in the Solution Explorer, located av.exe in my settings folder and delete it.  I started AVG and it allows to scan my computer, but he found nothing apart from all the cookies.

  Restarting my computer was when I noticed problems/damages.  There can be no more file associations.  When I tried regedit, it didn't know how to do this.  He doesn't know how to run any basic program.  Look in the Solution Explorer, I noticed that the system files (io.sys, msdos.sys, config.sys and autoexec.bat - no other sys files) on the root directory are now 0 KB.

  I think that the virus has disappeared, but now my computer is paralyzed.  I got my OS from a dealer and I do not know if it is still active with no way to travel and my phone through my computer.  I want to d/l the system files that I need.  Can anyone help?

  Very much sounds like you were attacked by a security program thugs and that also your computer is not clean. You need to do a more thorough cleaning because AVG alone will not do the job.

  The files you mentioned are not part of Windows XP and are there only for backwards compatibility with older software. Once you have cleaned your computer, problems can all be gone/repaired. If this isn't the case, you will need to have a copy of Windows for resettlement. I'll give you the link of the malware removal, but based on your post and without any intention to offend you, it would probably be best if you took the machine (or if someone had come on the spot to pick it up) to a local professional. This is not a type of BigComputerStore/GeekSquad of the place.

  http://www.elephantboycomputers.com/page2.html#Removing_Malware MS - MVP - Elephant Boy computers - don't panic!

• Can I delete system files from Windows.old after format?

  I reformatted my computer recently and I usually remove the Windows.old folder. What I never understood are system files that it contains. Can I remove them?

  Whenever I've upgraded to Windows 7 I reformatted and delete the windows.old folder and files system for Vista and had no problem, but he never did with the same program. So is it safe or should they be not deleted?

  Hello

  Remember there is nothing in the Windows.old folder or its subfolders you need before
  you remove.

  How to remove the Windows.old folder in Windows 7
  http://www.SevenForums.com/tutorials/19151-Windows-old-folder-delete.html

  How can I remove the Windows.old folder?
  http://Windows.Microsoft.com/en-us/Windows7/how-do-I-remove-the-Windows-old-folder

  How to remove the Windows.old folder that is generated when you perform a custom
  Windows Vista Setup (also Windows 7)
  http://support.Microsoft.com/kb/933212/en-us

  How to remove and delete the folder Windows.old on Vista or Windows 7
  http://www.kodyaz.com/articles/delete-Windows-old-removal.aspx

  I hope this helps.

• Vista cannot start because of accidentally deleted system files

  Hello

  my laptop was working very well until some files were accidentally deleted and now Vista cannot start.
  There is a message saying that I need to contact the system administrator or the manufacturer of the pc.

  Is there anything you could recommend?
  I would appreciate if you could help me find a way to record all of the information contained in hard drives.

  see you soon

  If you are not able to boot up the laptop and refuse it to Vista to start then take recovery in hand, insert it and start on this CD from Toshiba.

  Then the cell phone should boot from the recovery CD and reinstall the whole OS again.
  This should help, but the HARD drive will be formatted.

• deleting unnecessary files

  * What are the safe & reputable sites are there to remove unnecessary files and registry errors? I used to use AVG which has a set of performance that analyzes and corrects the above. But AVG missed it when I was whacked with 3 virus. Which has been corrected long ago. Anyway AVG was uninstalled and replaced with Microsoft Security Essentials. Since the abolishment of AVG, my GBs slowly use, makes me think that the registry errors and unnecessary files are piling up. I use CCleaner, but don't think it cleans everything that has accumulated. So if anyone knows a site safe and reputable which removes these questions, I would be grateful the info.*

  Kind regards

  Ron

  Hello

  CCleaner is as good as any one to eliminate the unnecessary and temporary files. I do not recommend its register
  cleaner (or anyone) because type programs will usually stop and difficulty nothing. And
  Windows don't need is no longer the cleaned registry (if it ever did).

  Disk Cleanup is also good and provided with Windows.

  Disk Cleanup
  http://Windows.Microsoft.com/en-us/Windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=Windows-7

  ===========================================================

  If you need search malware here's my recommendations - they will allow you to
  scrutiny and the withdrawal without ending up with a load of spyware programs running
  resident who can cause as many questions as the malware and may be more difficult to detect as the
  cause.

  No one program cannot be used to detect and remove any malware. Added that often easy
  to detect malicious software often comes with a much harder to detect and remove the payload. Then
  its best to be thorough than paying the high price later now too. Check with them to one
  extreme overkill point and then run the cleaning only when you are sure that the system is clean.

  It can be made repeatedly in Mode safe - F8 tap that you start, however, you must also run
  the regular windows when you can.

  TDSSKiller.exe. - Download the desktop - so go ahead and right-click on it - RUN AS ADMIN
  It will display all the infections in the report after you run - if it will not run changed the name of
  TDSSKiller.exe to tdsskiller.com. If she finds something or not does not mean that you should not
  check with the other methods below.
  http://support.Kaspersky.com/viruses/solutions?QID=208280684

  Download malwarebytes and scan with it, run MRT and use scanners online and other methods.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN

  Malwarebytes - free
  http://www.Malwarebytes.org/products/malwarebytes_free

  SuperAntiSpyware Portable Scanner - free
  http://www.SUPERAntiSpyware.com/portablescanner.HTML?tag=SAS_HOMEPAGE

  AdwCleaner
  http://www.bleepingcomputer.com/download/adwcleaner/

  Run the malware removal tool from Microsoft

  Start - type in the search box-> find MRT top - right on - click RUN AS ADMIN.

  You should get this tool and its updates via Windows updates - if necessary, you can
  Download it here.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN
  (Then run MRT as shown above.)

  Microsoft Malicious - 32-bit removal tool
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en

  Microsoft Malicious removal tool - 64 bit
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495e-94E7-6349F4EFFC74&displaylang=en

  Try the demo version of Hitman Pro:

  Hitman Pro is a second scanner reviews, designed to save your computer from malicious software
  (viruses, Trojans, rootkits, etc.). who infected your computer despite safe
  what you have done (such as antivirus, firewall, etc.).
  http://www.SurfRight.nl/en/hitmanpro

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

  If necessary here are some free online scanners to help the

  Microsoft safety scanner
  http://www.Microsoft.com/security/scanner/en-us/default.aspx

  Scan online ESET
  http://www.eset.com/onlinescan/

  Scan Kaspersky online
  http://www.Kaspersky.com/virusscanner

  Other tests free online
  http://www.Google.com/search?hl=en&source=HP&q=antivirus+free+online+scan&AQ=f&OQ=&AQI=G1

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

  After the removal of malicious programs:

  Also follow these steps for the General corruption of cleaning and repair/replace damaged/missing
  system files.

  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 in Windows Vista cbs.log
  http://support.Microsoft.com/kb/928228

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

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

  ======================================

  If necessary AFTER THAT you are sure that the machine is clean of any malware.

  How to do a repair installation to repair Windows 7
  http://www.SevenForums.com/tutorials/3413-repair-install.html

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle="" -="" mark="" twain="" said="" it="">

• A Windows operating system file is legitimate?

  C:\WINDOWS\APPPATCH\ACLAYERS. DLL

  It is marked by a virus/malware program that I use to suspicious behavior. TIA

  Hello

  This is part of Windows even though it is possible that he was infected.

  You can submit this file to these: (you send only a copy)

  http://www.VirusTotal.com/
  http://VirusScan.jotti.org/en

  http://VirSCAN.org/

  http://www.ThreatExpert.com/fileScan.aspx

  http://www.viruschief.com/

  =====================================

  If you need search malware here's my recommendations - they will allow you to
  scrutiny and the withdrawal without ending up with a load of spyware programs running
  resident who can cause as many questions as the malware and may be more difficult to detect as the
  cause.

  No one program cannot be used to detect and remove any malware. Added that often easy
  to detect malicious software often comes with a much harder to detect and remove the payload. Then
  its best to be thorough than paying the high price later now too. Check with them to one
  extreme overkill point and then run the cleaning only when you are sure that the system is clean.

  It can be made repeatedly in Mode safe - F8 tap that you start, however, you must also run
  the regular windows when you can.

  Download malwarebytes and scan with it, run MRT and add Prevx to be sure that he is gone.
  (If Rootkits run UnHackMe)

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN

  Malwarebytes - free
  http://www.Malwarebytes.org/

  Run the malware removal tool from Microsoft

  Start - type in the search box-> find MRT top - right on - click RUN AS ADMIN.

  You should get this tool and its updates via Windows updates - if necessary, you can
  Download it here.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN
  (Then run MRT as shown above.)

  Microsoft Malicious - 32-bit removal tool
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en

  Microsoft Malicious removal tool - 64 bit
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495e-94E7-6349F4EFFC74&displaylang=en

  also install Prevx to be sure that it is all gone.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN

  Prevx - Home - free - small, fast, exceptional CLOUD protection, working with others
  security programs. It is a single scanner, VERY EFFICIENT, if it finds something to come back
  here or use Google to see how to remove.
  http://www.prevx.com/   <-->
  http://info.prevx.com/downloadcsi.asp  <-->

  Choice of PCmag editor - Prevx-
  http://www.PCMag.com/Article2/0, 2817,2346862,00.asp

  Try the demo version of Hitman Pro:

  Hitman Pro is a second scanner reviews, designed to save your computer from malicious software
  (viruses, Trojans, rootkits, etc.). who infected your computer despite safe
  what you have done (such as antivirus, firewall, etc.).
  http://www.SurfRight.nl/en/hitmanpro

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

  If necessary here are some free online scanners to help the

  http://www.eset.com/onlinescan/

  http://OneCare.live.com/site/en-us/default.htm

  http://www.Kaspersky.com/virusscanner

  Other tests free online
  http://www.Google.com/search?hl=en&source=HP&q=antivirus+free+online+scan&AQ=f&OQ=&AQI=G1

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

  Also follow these steps for the General corruption of cleaning and repair/replace damaged/missing
  system files.

  Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup

  Start - type this into the search-> find COMMAND to top box and RIGHT CLICK-
  RUN AS ADMIN

  Enter this at the command prompt - sfc/scannow

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

  Run checkdisk - schedule it to run at the next startup, then apply OK then restart your way.

  How to run the check disk at startup in Vista
  http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

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

  If we find Rootkits use this thread and other suggestions. (Run UnHackMe)

  http://social.answers.Microsoft.com/forums/en-us/InternetExplorer/thread/a8f665f0-C793-441A-a5b9-54b7e1e7a5a4/

  I hope this helps.

  Rob - bicycle - Mark Twain said it is good.

• Cannot delete the file in the main directory

  The folder named "c56c915b331fec57c53d8", I cannot remove it.  There are 2 files and 2 folders inside all created 14/07/09.  The folder has been created at the end of October 2009.  Is it a virus or backdoor for another program?  How can I remove it from my computer?

  Hello

  What are the names of names of files and folders and they have any content? Right click on each one in turn
  and select Properties, then on the Details tab to see if a program or the manufacturer is named.

  If you think that the use of malware from these methods to do a thorough search and don't forget there is no program
  can detect or remove all malware.

  It can be made repeatedly in Mode safe - F8 tap that you start, however you must also run them
  the Windows when you can.

  Download malwarebytes and scan with it, run MRT and add Prevx to be sure that he is gone. (If Rootkits run UnHackMe)

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN

  Malwarebytes - free
  http://www.Malwarebytes.org/

  Run the malware removal tool from Microsoft

  Start - type in the search box-> find MRT top - right on - click RUN AS ADMIN.

  You should get this tool and its updates via Windows updates - if necessary, you can download it here.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN
  (Then run MRT as shown above.)

  Microsoft Malicious - 32-bit removal tool
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=en

  Microsoft Malicious removal tool - 64 bit
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495e-94E7-6349F4EFFC74&displaylang=en

  also install Prevx to be sure that it is all gone.

  Download - SAVE - go to where you put it-right on - click RUN AS ADMIN

  Prevx - Home - free - small, fast, exceptional CLOUD protection, working with other security programs. It comes
  a scan only, VERY EFFICIENT, if it finds something to come back here or use Google to see how to remove.
  http://www.prevx.com/   <-->
  http://info.prevx.com/downloadcsi.asp  <-->

  Choice of PCmag editor - Prevx-
  http://www.PCMag.com/Article2/0, 2817,2346862,00.asp

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

  If necessary here are some free online scanners to help the

  http://www.eset.com/onlinescan/

  http://www.Kaspersky.com/virusscanner

  Other tests free online
  http://www.Google.com/search?hl=en&source=HP&q=antivirus+free+online+scan&AQ=f&OQ=&AQI=G1

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

  Also do to the General corruption of cleaning and repair/replace damaged/missing system files.

  Run DiskCleanup - start - all programs - Accessories - System Tools - Disk Cleanup

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

  Run checkdisk - schedule it to run at the next startup, then apply OK then restart your way.

  How to run the check disk at startup in Vista
  http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

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

  If we find Rootkits use this thread and other suggestions. (Run UnHackMe)

  http://social.answers.Microsoft.com/forums/en-us/InternetExplorer/thread/a8f665f0-C793-441A-a5b9-54b7e1e7a5a4/

  I hope this helps.

  Rob - bicycle - Mark Twain said it is good.

• Accidentally deleted a dynamic link library (DLL) file and the need to replace one possibly other system files - what is the best method?

  I did a system restore to a point before that my main user account has been established.  I had to set up a new user, and then it was suggested that to copy all the data of the user "existing" to the newly created user.  When I did this it's not well at all and some DLL files have been corrupted or deleted or not connecting correctly to the user of your choice.  I actually then did a restore of the system to the last restore point.  However, given that SR does not change the data, I was stuck with the wrong DLL and other system files.  I thought I had stupid test because I had backed up data.  I tried to restore to an earlier point (using Windows backup and restore).  Unfortunately the restore will not work and I get the following error: "a systematic failure of the initialization of the Dynamic Link Library (DLL).  I need to repair or replace the corrupt to get the system back and then protected files again.  I'd appreciate any help!

  Thank you

  In the case that he is a protected system file, you can check if you can always run the System File Checker

  http://support.Microsoft.com/kb/929833

  You can boot from a system repair disc to retrieve an image from the previous system that you have made.

  http://Windows.Microsoft.com/en-us/Windows7/what-are-the-system-recovery-options-in-Windows-7

• Delete system 32 files, now the computer does not work.

  Hi all, I received a virus there is a day of a program called Internet Security 2010 for me (I think it's an advanced antivirus remover or something a long these lines..)

  In the case, I did a scan of the system with AVG and BitDefender, nor presented with something else that the virus still persists. I took to google and then made to spybot, once you have downloaded and installed, spybot was the source of my problems and showed that helper32.dll and smss.exe in my System32 folder where the two infected. Knowing this, I deleted both of these files, but some issues (such as Mozilla blockin automatically to sites like facebook)... I advanced and downloaded malwarebytes. ... I run another scan encounted three more errors, helper.dll has been infected, still, so I tried to delete it once more, but I need permission to do so.

  In a stupid gesture, I moved into my office, almost desperately tryin to get rid of, renames, tried to remove it, permission, so now there remained
  I've renamed helper32.dll and put back into System32 filefolder. I also downloaded Microsoft Security Essentials.

  In the case, something, I think in my registry, or maybe in my services I messed up, because whenever I connect to my computer, I get a popup of the saying of the toolbar "Windows could not run services" and something to reject llimited to users to access certain things. " In addition, my internet does not connect and says "service incorporate or group does not" or something of the sort.

  I have remove the somethingI wasn't supposed to? How can I change? In addition, the system restore will not work and keeps telling me an unknown error occurred and tells me to pick another point to restore, but says that with every point, I try to restore, as well, I have no backup of windows.

  For the record, I am running Vista 32-bit Home.

  Can someone help me?

  Hi Anarchoi,

  You are able to get to a command prompt?  If so, run SFC/scannow to replace missing or damaged files.  Let us know if that helps.

  Dena
  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• How we prevent confirmation prompt when you delete the files of the system, i.e. thumb.db

  Whenever I try to remove a crease, a boring confirmation is poped by asking if I really want to delete a file system, I know it's just thumb.db.

  I tried the solution, but is all about how to prevent the creation of thumb.db. I want thumb.db caching to speed up the fold views, but don't want to see the dialog box remove the file system. Is there a group policy or the registry to disable the confirmation of deletion of file system?

  It is also well informed that you're going to get.  :-)  It would be the only way to disable to disassemble Windows code that handles of deleting the file change there, then replace the code in an executable file.  IOW, no.

• How to delete a file duplicate, located on the system drives and the user, which hogs place CPU when enabled?

  trying to open iTunes, all 100% of the space of the CPU is used immediately, make all executable programs

  slow to run.  Go to the Windows Task Manager shows two processes support AppleMobileDevice, one in the system account, the other to the user

  account.  All other Apple processes are in the user account. Considering the upgrade to Windows 7 without worrying, but are looking for the best way to remove the

  process to the system account without affecting overall performance. Thank you all. Glenwood

  Completely remove iTunes and do a clean reinstall by following the steps below.

  Note that you cannot 'upgrade' from Windows XP to Windows 7.  If your computer hardware is compatible with Windows 7 and Windows 7 drivers are available, you can install Windows 7, but this operation will require a new install of Windows 7.

  You can use Windows Easy Transfer to copy your data, but not your applications.  Applications will need to be reinstalled from original installation media.

  To perform a "clean" iTunes installation uses this technique proposed, from Support of Apple HT1926 article.

  Warning: uninstall utility for cleaning Windows mentioned in the instructions below has been removed from Microsoft download servers because sometimes it seems more removed he was supposed to (I think that this phenomenon was linked to the bureau uninstalls).  You can still get utility Windows Installer Cleanup--> http://majorgeeks.com/Windows_Installer_CleanUp_Utility_d4459.html here is a free alternative Revo Uninstaller. Before using these cleaning products, you must create a restore point from the system first (or back up the registry with C:\WINDOWS\ERUNT).  See http://windowsxp.mvps.org/registry.htm a complete disk image would be safer if you have this ability.

  Go to control panel > Add/Remove programs
  Remove these applications:
  1 Apple Software Update
  2. Apple Mobile Device Support
  3 Hello
  4 iPod for Windows (this may or may not exist, be it, it is not necessary, then we can remove it)
  5 iTunes
  6 QuickTime

  Open my computer > C: > Program Files
  Delete this files (if present)
  1 iPod
  2 iTunes
  3 QuickTime

  Empty your temp directory:
  Open my computer > C: > Documents & Settings > username > Local Settings and delete the contents of the folder called "Temp".

  If you don't see the local settings, enable hidden files:
  Tools > Folder Options > view tab
  Select Show Hidden Files & folder, and then click OK

  Once this file is empty, restart the computer

  Download & install the Windows Installer Cleanup utility:
  http://support.Microsoft.com/kb/290301/
  Launch the utility: start > programs > Windows Installer Clean Up
  Select one of the applications mentioned above and click on remove

  Restart the computer
  Download & reinstall iTunes from here: http://www.apple.com/itunes/download/

• After replacing a lost critical system file, I can now initialize & get online, but I have no sound.

  After replacing a lost critical system file, I can now initialize & get online, but I have no sound. How can I activate the sound back?

  original title:. Its Windows XP problem

  Hi Delno,

  I suggest to check the connection of the wires to the speakers and then follow the steps in the article.

  No sound in Windows

  http://Windows.Microsoft.com/en-us/Windows/help/no-sound-in-Windows

  Let us know if that helps.

• I recently had a virus on my computer and my security system suggested that several files. I think I maybe deleted some files wrong because now I can open only some files.

  I recently had a virus on my computer and my security system suggested that several files. I think I maybe deleted some files wrong because now I can open only some files. I tried to restore my computer to factory settings, but it won't let me open the system restore. I also have an installation disc, but it does not work either. What can I do to get those files or restore to the factory settings? any help would be appreciated

  original title: help!

  Hi AndrewThomas 924,

  Please see the thread following SpiritX troubleshooting for XP:

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_xp-system/how-can-i-remove-fake-Ms-removal-tool-on-Win-XP/35a66f81-7064-E011-8dfc-68b599b31bf5

  I hope this helps!

• Delete a file system and now Windows XP will not boot.

  Original title: delete the file system
  
  I deleted a file in system 32 hal.dll and cannot start my PC

  Hi bibidennis,

  Perform a repair of Windows XP installation to fix the problem.

  For instructions, see the following article:

  Perform a repair Installation

  If you have installed Internet Explorer 7 or 8, see the following article for instructions on performing a repair of Windows XP installation:

  How to perform a repair of Windows XP installation, if a later version of Internet Explorer is installed

• Is it safe to delete the files from the System 32 &#62; DriverStore &#62; Temp folder?

  I was do a cleaning on my system and find files and temporary folders in all directions. I was wondering if it is safe to delete the files from the System 32 > DriverStore > Temp folder.

  Thank you

  DC

  Nothing in the Windows or Program Files and files their subfolders should be left alone.  You won't earn a significant amount of disk space, and you may cause to yourself untold trouble sleeping herein.  Use instead the provided Windows Disk Cleanup.  You can get to it by clicking on start-> computer, then click on the C: drive and click Properties.  On the general tab, you will see disk cleanup.  Use it and you will be safe (and not sorry).  Everything you personally placed on the computer can always be removed of course as long as you do not try to remove installed manually the software (use the programs and features in the control panel for this).

  I hope this helps.  Good luck.