M2N-E CPU Upgrade

[ssss25]

Hi,

Hello, I've got M2N-E motherboard with 8GB or RAM, Nvidia video card working with AMD Athllon X2 6000 perfectly. I got Phenom X2 925 (Quad Core) and upgrade Bios to 5001. The BIOS loads fine, sees CPU all good until I try to load WIndows 7! After few seconds of trying to load windows, it just reboots! I tried loading Windows 7 CD, it also gets stuck ate the starting windows logo.

Any ideas what I am doing wrong? I Tried reset BIOS to default settings, same thing.

Thanks,