A couple things
1. Make sure you have the latest drivers for you motherboard.
2. Make sure you have set your jumpers to the normal setting and not the reset jumper configuration.
3. If all else fails clear CMOS by carefully removing battery for 30 seconds and consult your manual for jumper placement.
Assuming your using your ASUS Board you have on the post here are the latest drivers page. Oh by the way, It is a ASUS M2R32-MVP I think.
http://support.asus.com/download/dow...Language=en-us