do you mean like it freezes for like 2 seconds or it crashes?, because on my computer, i ran disk cleaner and disk defragmenter, and rebooted, that seemed to fix it if thats what you mean
that could be any number of problems. it could be HEAT. Maybe it's the PSU. You're gonna have to troubleshoot. i would try heat first. one thing you can do right off is make sure the inside of your computer isn't covered with a layer of dust. this is common. the fans pull in all manner of dust from the air and it builds up on your heatsinks. when this happens, the computer can't dissipate heat anymore. actually, the reverse happens. the heat is trapped in. Is this computer store bought, or custom built? What kind of power supply was used?
I know now the problem. The problem is my videocard software. I changed it to maximum performance. Then when my computer hangs, I wait for if then the error box pop ups. Then there it said that the VPU Recovery is not responding. I hope this thread helps someone.