Posted 09 October 2011 - 07:56 PM
My desktop computer is HP DC5700M, running Microsoft XP Professional, Version 2002, Service Pack 3. About a month ago, the usage jumped up to 100% and everything ran extremely slow. I could not determine the cause, so I took the computer to Computer One for repair. The first thing they told me was I had a trojan and they supposedly repaired it. Within 24 hours of picking it up, it was doing the same thing again. I took it back and this time they said they found and killed a rootkit virus. I brought it home again, and have been having pretty much the same trouble ever since. I use AVG for anti-virus protection, but the anti-virus program is "not active" and it won't repair and therefore won't run. I've tried to download and install MalwareBytes, SUPERAntiSpyware, and GMER. All will download, but none will execute. GMER.exe was even downloaded with a different name, but when I launch it, my computer says that it is not a valid Windows32 application. SuperAntiSpyware and MalwareBytes won't even respond at all. I'm not keen on taking the computer back to Computer One, as you might imagine, so I would like to try and resolve this myself with YOUR help!
So, with that said, where would the experts suggest I start? Thank you!