How to stop Windows 7 nonstop rebooting?

My computer with windows 7 keeps rebooting now even after having checked with anitmalware and norton.  After I loaded the files from Regback in windows/system32/config, it still changed back and rebooting.  Appears there is a virus or software somewhere keep change the files and registry back to what I had fixed with regback and antivirus to enter the reboot cycles.  What virus caused this and how to remove?  Thanks.
 

Question Info


Last updated December 24, 2017 Views 633 Applies to:
Answer

Hi,


Let's try the following steps and check if they help us fix the issue.


Method 1: Except keyboard and mouse, disconnect all the external devices that are connected to the computer and check if the issue persists.


Method 2: I would suggest you to boot to desktop Using Last Known Good Configuration in the Advanced Startup Options after unplugging all the external Devices (except keyboard and Mouse) and check if the issue persists.

 

Method 3:

Step 1: Let's start your computer in safe safe mode and check.

Refer to the suggestions from the following link:

http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode


If it works fine in safe mode, perform clean boot to find the root cause.

Step 2: Let’s place the computer in clean boot.

Clean boot will help us identify if any third party applications or start up items are causing the issue.

To do this, follow steps from this link:

http://support.microsoft.com/kb/929135

Note: After checking the functionality in clean boot, follow the suggestions under “How to reset the computer to start as usual after troubleshooting with clean boot”.


Method 4: Perform a full scan using Microsoft Safety Scanner.

 

Refer to this link:

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

Note: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.


Hope this helps.

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