I'm often on this site, learning from the pro's but rarely need to ask for help. I enjoy learning how Windows works and I tinker with just about every part of the operating system.
That inevitably leads to problems, which I fix and learn from, but this time I'm baffled.
I will give you all the information I have so bear with me.
My problems started after I made several changes to the computer. I uninstalled Avira AV and installed Avast AV. Then using Autoruns,
I unchecked two unverified Microsoft items from the list but I can't remember which ones. I probably made some other minor changes but again I don't remember.
When I restarted I had a BSOD with 0x0000007b (0x80d86b58, 0xc0000034...) I had lost my Master Boot Record and my Master File Table.
I was able to fix the MFT, booted from the DVD, ran Diskpart, and used the command sfc /scannow /offbootdir=D:\ /offwindir=D:\windows which showed Status: 0xc0000e.
I had to remove the file Windows\winsxs\reboot.xml then run the sfc command again. I also ran chkdsk /f at some point which showed no problems.
I got the system up and running and tried System Restore which was unable to help.
I have checked my hard drive with OEM software and have scanned my system with several security products including Malwarebytes' and DDS to rule out these problems
but I still have several issues including:
- I cannot open Registry Editor through Windows, in safe mode or with 3rd party software.
- In User Accounts, I cannot access my own account or anything marked with a shield.
- I cannot remove some programs due to a problem with the Windows Installer Service not being able to run.
- Keyboard & Mouse options in Control Panel will not open (both devices still work).
- I have no Windows Experience Index showing in "System" (it was a whooping 2.2 on this computer).
- I have two errors in Event Viewer:
- The following boot-start or system-start driver(s) failed to load: Beep.
- The Beep service failed to start due to the following error: Beep is not a valid Win32 application.
Running sfc /scannow with administrative privileges stops at 64% every time I run it.
I've ran the command findstr /c:"[SR]" %windir%\logs\cbs\cbs.log to show what files cannot be repaired but the list is still huge.
I believe one of my main issues is caused by not having the correct access rights and I understand that formatting the hard drive is an option
but I would appreciate a little guidance to try and fix the system before I consider reinstalling Windows.
My operating system is Windows 7 Ultimate.