Today I powered on a PC I was NOT using for about 10 months (with some IMPORTANT data).
After I logged my default administrator user:
1. My AV was not loading and something was strange. NO FREE SPACE on NON of my HDs.
So I deleted some BIG DATA and now I had a few GBs free on any of them. RESTARTED.
2. NOW the big PROBLEM arrived:
The Avast! antivirus is still NOT loading.... AND:
I CAN NOT RUN BIG PART OF the EXE files (includes explorer.exe, msconfig.exe, regedit.exe, mbam.exe [Malwarebytes] )
Every time I try to open a file I get:
"Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item."
Most of the important options on Windows (for example "Add or remove user accounts") are NOT working, although I'm logged on the administrator.
I did some Google, I saw some suggestions, I tried:
TDSSKiller.exe , FixTDSS.exe , HitmanPro_x64.exe , msert.exe [Microsoft Safety Scanner]
Could NOT run any of them. All give me the same problem ( "Windows cannot access the specified....." )
I tried the "trick" to rename to "iexplore.exe" - NOT working.
Although, the REAL Internet Explorer is working, also Windows Media Player and a few other useless applications.
Avast is not loading as I said but it is showed at the Windows Task Manager - Processes - as loaded ( "AvastUI.exe *32 )
F8 on startup isn't doing nothing so I can not run SAFE MODE and I couldn't "force" to load safe mode as msconfig.exe is not working.
My machine is -
Windows 7 Pro, SP 1, 64, Legal Copy ("activated"), with "AVAST! Free Antivirus" installed.