Last night I was able to revive my older HP Media Center PC by installing a new video card; the old one had failed.
The computer was performing slowly and had previously been having some problems on startup that I was unsure whether were related to the ailing video card or something else. I am running Windows Vista Home Premium.
I completed a thorough scan with Avast and the report indicated that I had one high-level threat: Win32:Malware-gen in C:\Program Files\Yahoo! Games\Text Twist\TextTwist.exe. Avast could not do anything with the file, neither delete nor repair nor send to the virus chest because "access is denied."
I decided to run MBAM but each time I try to perform a scan, the computer freezes after scanning a thousand or so files. I was able to boot into Safe Mode and run a quick scan via MBAM there; that scan completed successfully and showed one threat: Adware.BHO. That threat was deleted. No mention was made of any other threat, including the one that Avast found.
I booted the computer normally and ran a quick scan with MBAM again; once again, it froze the computer before finishing.
Now, I fear that I made a mistake due to both ignorance and haste. I found directions online for removing Win32:Malware-gen and began following those directions, which include use of Combo Fix. I got to step three of the process, which is the MBAM step, and again encountered what I have described above. Here are the steps I was following:
I see here on this forum some very strong warnings about using Combo Fix, but I have done it. Perhaps my ignorance and haste will cost me a computer. I'm looking for help from you fine folks.
Thank you, and I apologize if my approach here violates any part of established forum protocol.