I have a Gigabyte GA-MA61PME-S2P MB and have just installed a new AMD Phenom II 955 3.20ghz CPU. Initially the computer booted up fine but after being on for anything up to 15 minutes would just switch off with no warning, as if someone turned off the power.
After looking through various option I discovered that the onboard GPU (Nvidia 6100), was getting VERY hot and after cooling it down with a stream of cold air, the computer would be able to be turned on again and work until the GPU got hot when it would switch off again.
I tried reinstalling Windows XP and the computer would stay on for the entire install process and then shut down as soon as I started to install any drivers.
That's problem number one!
I have tried several options and now have new problem, the computer boots, loads the BIOS settings, which I can change, but then sits at a blank screen and will not load Windows. No cursor, nothing! I've tried the "Load Defaults" option in the BIOS as well as trying to boot from CD to reinstall Windows but alas, nothing works.
The only hint I can find is that the Gigabyte CPU Support List (http://www.gigabyte....p.aspx?pid=3262) as a listing for the Phenom II 955 CPU I have but only has a recommended BIOS for the 95w version, not the 125W version I have installed.
Any suggestions would be appreciated!
For what it's worth I also have an GEForce 6600 graphics card installed in the PCI Express slot but remove this and trying to start the machine without it makes no difference.