bought a computer from cyberpower, you can see the specs in my signature. to make a long story short, about 30-60 seconds after logging into windows xp sp2, my computer becomes very sluggish. When you look at task manager, on the cpu performance tab, both cores are jumping all over the place, and eventually work their way to 50-55% on cpu usage. this has been happening since day one. I did mem test, switched video cards out, including switching from sli to normal. nothing fixes it. I sent back to cyberpower, they kept it for a month, then said it is the mobo, which was a gigabyte k8n sli pro. I upgraded to the asus. got it back, and it still does the same thing. they sent me a new cpu, but it is liquid cooled, and i hear it is real easy to screw that up. any ideas as to what may be the problem before i risk messing this cpu up? oh, and i was trying to switch the hard drive from my old pc to the new one to see if that was the problem, but couldnt get it to boot. so i reattached everything and now, the first core isnt jumping all over the place, just the second core, according to the cpu performance history chart. and also, on the processes tab, system idle is at 99% the whole time it does this. hope i make sense, this is my first post.