I am working on someone's computer that is having some very odd problems that I can't see mto track down... The owners complaint was that it kept on freezing. I looked at it and it had severe rootkit infections and bad sectors on the hard drive. We replaced the drive and did a fresh install of Windows. I also ran memcheck from dos for a few hours and it did not find any errors. They got the computer back last night after I could not find any other infections. I heard from them again this morning that it froze when they were checking emails from Outlook. Any ideas on what it could be?
It had a factory upgrade to 8gb ram (2GBx4). No part has been removed or changed out since it was originally purchased. I was thinking it may have been a PSU or motherboard but after running memtest for hours without the slightest hiccup I kind of threw that out.
EDIT: I also checked temperatures and there was nothing alarming there.
Have you ever seen leaking capacitors where the electrolytic fluid was black and looked more like a mark from a black Sharpie? There are some caps that have that on the motherboard and I am pretty certain that I was the first person to crack open this system so either the fluid was charred or, for some reason, HP marked some of the caps.
I noticed that the HDD light was still blinking after a freeze so I tried swapping the graphics card and everything is working now. It appears that it may have just been the GPU freezing while the rest of the computer was okay. Since a hard drive and graphics card went out at the same time I am also switching to a new PSU because I am afraid this one is producing dirty power and trashing components.