Hello, My Windows XP installation has recently started to freeze and I can’t seem to fix the problem. The problem starts at boot up where the splash screen can sometimes freeze, or even when I get to my desktop the entire system freezes, including the mouse cursor. I think I can rule out safely that it’s not a hardware issue as my Windows Vista installation (Installed on the same HDD.) does not freeze at boot up/the splash screen. Things I've tried: I’ve attempted to fix the problem by doing a CD Disk cleanup, turning off all startup items in MSCONFIG, doing an error-checking on Windows XP through my Windows XP disk, and cleaning all temporary files in all user accounts through (C://documents and settings/user/local settings/temp) Computer specs: Processor: Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz (2 CPUs) Memory: 4 GB Hard Drive: 500 GB Video Card: EVGA NVIDIA GeForce 9800 GX2 Superclocked Edition Monitor: SyncMaster 226BW(Analog) Sound Card: SoundMAX HD Audio Keyboard: USB Root Hub Mouse: USB Root Hub/optical mouse PSU: Corsair 750w Operating System: Windows XP SP2 Motherboard: Asus P5K-E WiFi-AP ____ I'm about to try a Windows XP recovery installation through my XP disk. As shown, I have not updated my XP installation to SP3, it is still at SP2. The last few things I did was install ZoneAlarm and the game called F.E.A.R. and that was before this freezing issue arose. Oh, and as shown, I also don't believe it to be a PSU problem as my Corsair is a 750w PSU. Thanks for any help, Tyler UPDATE: Now, out of the blue, my Vista installation has also started to randomly freeze, too. It hasn't frozen to the point where it entirely freezes, but it does freeze the OS for a few seconds before returning to normal. So, a hardware issue possibly back in the game? = ( I've done some of my own researching and found out that it's probably a motherboard issue, but how to go about checking for a damaged motherboard in this situation? Thanks again.