• Hi there and welcome to PC Help Forum (PCHF), a more effective way to get the Tech Support you need!
    We have Experts in all areas of Tech, including Malware Removal, Crash Fixing and BSOD's , Microsoft Windows, Computer DIY and PC Hardware, Networking, Gaming, Tablets and iPads, General and Specific Software Support and so much more.

    Why not Click Here To Sign Up and start enjoying great FREE Tech Support.

    This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Solved Deleted crucial files help

Status
Not open for further replies.
I tried reformating my pc but it wont work, i dont get any errors but the reformate stops.


Is the machine still able to boot, but you do not have permissions? If so, I am almost certain I can get things going for you...

If this is the case, I'd like to see a set of FRST logs from the recovery environment.

I would first like you to try a System Restore from the recovery console. Choose a point well before the issue. You can get there by following the instructions below. If you are unable to complete a system restore then go ahead and get me the logs from FRST so that I can see what is going on with your machine.



  • On a clean machine, please download FRST 64bit or FRST 32 bit and save it to a flash drive. Note: You need to run the version compatible with your system. Plug the flashdrive into the infected PC.
  • If you are using Windows 8 consult How to use the Windows 8 & Windows 10 System Recovery Environment Command Prompt to enter System Recovery Command prompt. If you are using Vista or Windows 7 enter System Recovery Options. To enter System Recovery Options from the Advanced Boot Options:
    • Restart the computer.
    • As soon as the BIOS is loaded begin tapping the F8 key until Advanced Boot Options appears.
    • Use the arrow keys to select the Repair your computer menu item.
    • Select US as the keyboard language settings, and then click Next.
    • Select the operating system you want to repair, and then click Next.
    • Select your user account an click Next.
    Note: In case you can not enter System Recovery Options by using F8 method, you can use Windows installation disc, or make a repair disc. Any Windows installation disc or a repair disc made on another computer can be used. To make a repair disk on Windows 7 consult:This guide created by @gus To enter System Recovery Options by using Windows installation disc:
    • Insert the installation disc.
    • Restart your computer.
    • If prompted, press any key to start Windows from the installation disc. If your computer is not configured to start from a CD or DVD, check your BIOS settings.
    • Click Repair your computer.
    • Select US as the keyboard language settings, and then click Next.
    • Select the operating system you want to repair, and then click Next.
    • Select your user account and click Next.
    On the System Recovery Options menu you will get the following options: Startup Repair System Restore Windows Complete PC Restore Windows Memory Diagnostic Tool Command Prompt Select Command Prompt Once in the Command Prompt:
    • In the command window type in notepad and press Enter.
    • The notepad opens. Under File menu select Open.
    • Select "Computer" and find your flash drive letter and close the notepad.
    • In the command window type e:\frst (for x64 bit version type e:\frst64) and press Enter Note: Replace letter e with the drive letter of your flash drive.
    • The tool will start to run.
    • When the tool opens click Yes to disclaimer.
    • Press Scan button.
    • It will make a log (FRST.txt) on the flash drive. Please copy and paste it to your reply.
 
  • Like
Reactions: georgeks
Windows Vista/ 7/8/8.1/10 keep a regular backup of the registry handy in case you need to overwrite a corrupted registry. By default, the RegIdleBackup task runs every 10 days, so that’s as far back as you would lose if you replaced the current registry with the automatically backed-up files. You can find the backed-up registry files in \Windows\System32\config\RegBack folder.

Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

Please type below commands into Command Prompt and for each command you have typed press Enter key.


Code:
Ren  C:\windows\system32\config\SAM         SAM.BAK
Ren  C:\windows\system32\config\SYSTEM      SYSTEM.BAK
Ren  C:\windows\system32\config\SECURITY    SECURITY.BAK
Ren  C:\windows\system32\config\DEFAULT     DEFAULT.BAK
Ren  C:\windows\system32\config\SOFTWARE    SOFTWARE.BAK
 
Copy  C:\Windows\System32\config\RegBack\SAM         C:\windows\system32\config
Copy  C:\Windows\System32\config\RegBack\SYSTEM      C:\windows\system32\config
Copy  C:\Windows\System32\config\RegBack\SECURITY    C:\windows\system32\config
Copy  C:\Windows\System32\config\RegBack\DEFAULT     C:\windows\system32\config
Copy  C:\Windows\System32\config\RegBack\SOFTWARE    C:\windows\system32\config

This procedure assumes that Windows Vista/7/8/8.1/10 is installed to the C:\ partition. Make sure to replace C:\ drive letter to the appropriate Windows OS installed partition drive letter if it is a different location.

Above commands renames the registry files at their existing location, and then copies the registry files from the RegBack folder to the C:\Windows\System32\Config folder.
 
Status
Not open for further replies.