I'm at a loss of what is wrong, with my new system, so I thought I'd throw it out there to the experts. The following is my prediciment. Brand new Soyo SY-P4VGA ATX P4 motherboard, BIOS flashed to most up to date (happened before flash too) Brand new Intel P4 2.8gig non-Prescott 512k cache Brand new 512meg DDR PC333 ram Board has onboard Audio, S3 video, and Ethernet Also have tried with my ATI Radeon 9000 Pro, Promise ATA 133 card + hard drives Symptoms occur with any configuration, even with just onboard equipment and hard drive. The computer is stable if very little is going on, but if you get it to do more than about 1-2 things at once, or anything graphical, this go down the tubes. The computer freezes all the time, for no obvious reason. The temperatures seem fine. The heat sink is mounted with thermal paste and the stock fan. No fan on the mainboard chip, but heatsink is in place. Now when looking at the temps with HMonitor, it looks like the mainboard may be heating up (say 74C in red) and the heatsink definately feels warmer than the one on the CPU. I have a feeling this is what it is related to, but I'm not sure. I have replaced the RAM to no avail, so I am looking for some input into what you think the culprit is. New Mobo? New CPU? I want to play with my new faster toy, so any help would be appreciated. Thanks Dr Marvin