New mobo = shutting down after 20 minutes?

[geno]

First off, this is an older, 865PE - based system which I'm using to play games / videos on a TV, so its most severe duties include playing fullscreen 480i content and not much more. The old mobo died (RIP Abit IS7) and I replaced it with an MSI 865PE Neo2-V. So far so good. But I fired up a video and left it running in fullscreen. After 20 minutes or so, the system powered off and would not power back on, as if a thermal switch had been tripped and the system needed to cool down. 5 minutes later, it would power back on. I did the same thing, left it running a video, and it did the very same thing in the same timeframe.

This sounds like a thermal issue, but all of the fans are performing fine. I even ran HW monitor last time to see if any temps climbed and they did not. Could the motherboard cause a condition where the system would refuse to power on for some time? Or is that purely a function of the PSU?

Trying to save a few bucks and maintain an older system is actually causing me more headaches...I should just pony up and get a cheapie C2D system 😛

 

[Blain]

Originally posted by: geno
The old mobo died (RIP Abit IS7)

Did it die or was it murdered? 😛
For diagnostic information, try blowing a box or desk fan in on the MB with the side panel off.
Run a burn-in or benchmark app that pushes the whole system.

 

[0roo0roo]

psu?

 

[geno]

The old mobo was murdered, unfortunately. The CPU stuck to the heatsink while removing it, leaving the socket locked... it wouldn't boot after that. I had to remove the CPU and didn't realize what was happening until the CPU was halfway out of the socket! I'll try the fan thing. 0roo0roo, I'll try to diagnose it as the PSU. The fact it won't power right back on after it cuts out makes me think something in the PSU is getting involved...but I could be wrong.

 

[imported_wired247]

PSU or possible grounding problem is my guess