K so i just purchased this computer. HP pavillion 3gigs 320g HD etc... I got it from craigslist actually. Now before all the "boos" n crooked faces lol. This system is overall prestine. It was new maybe turned on n used a few times but when it is as new when i turned it on. Now as far as i can see it runs very nicely. everything executes properly, the speed is pretty incredible etc.. I have one issue n iv'e never seen it before. It will randomly freeze on me. Now this is windows vista. Im not familiar with it so i dunno if this is an OS issue or something else. I opened the tower aswell n from what i can see it all looks mint. Maybe its the cdrom? i dunno what it is... Anyhow i havent any patterns as to when or what causes the freezing. Now i can be on for hours at a time or have multiple programs open or none n it will just all of a sudden freeze. I mean the mouse wont move etc. if i have sound on it will just stutter. Everytime this happens i have to pull the power cord. :cry (annoying as hell) Like i said otherwise when its working properly it works wonderfully n prestinely i can be running 1 thousand things or none it will work nicely! What could be causing this? is it fixable? How do i approach this issue to a tech if i need to bring it in to a shop? What does this issue sound like?