I'm having a hard time trying to pinpoint what's wrong with my computer.
A couple of days ago I foolishly got infected with what F-Secure said was Gen:Variant.Kazy.706. I thought I'd gotten rid of it with the help of F-Secure, some Googling and deletion of files that were supposed to be part of said virus. F-Secure and some anti-malware software (forgot its name, was recommended on forums) both checked out clean so I thought that was the end of it.
However, a couple of hours after, my monitor's graphics went into complete blur/distortion and a few seconds after, the cursor wouldn't move and then the computer would reboot. It continued doing the same thing in irregular intervals it seemed, just during normal usage (not games, etc). I've attached a picture here I took during one of those times (excuse me for the quality!):
Thinking it was the virus, being too lazy to fight it, and also kind of wanting to make the move from Vista to 7, I decided to just go for a format. I did so, installed 7 without problems and thought I was good... until the same thing happened again.
So, as I said, formating my hard drive and installing another OS didn't help. I then switched the graphics card to a different one for a test -- didn't help. I then tested my memory sticks one by one with Memtest+86, all passed. So the problem still persists for me.
Most recently, I applied an update to my BIOS. On the first attempt after, the computer wouldn't start-up anymore. It'd try, but it went on a loop of the power source LED just dying and going back on every few seconds. That hasn't happened since, but the BIOS update brought on a new problem: every five or ten minutes or so, the processor fan and the fan at the back of the computer start whirring like crazy for a while. The first time this happened, the computer actually rebooted itself.
So in summary, my problems are the graphics completely distorting before the system freezes at irregular intervals (AFAIK), and now the fans that are going nuts every once in a while. Common sense tells me it can't be the virus anymore, but the timing just seems like too much of a coincidence... these problems arose the same day I got infected. Still, I'm guessing it's probably a hardware problem by now. Unfortunately I don't have access to a spare motherboard, processor or power source to test with...
Any ideas on what could be the issue here?