Graphics not displaying

Which graphics are you currently using?
If you are using an AGP graphics card in the AGP slot try replacing it.
Make sure your monitor is not the problem. Test on another system.
If you are using the motherboards built in AGP graphices you can try resetting the bios. See page 1-21 section 1.9 in your manual. After which you will need to reset all settings within the bios. See page 2-20, section 2.4.3 Set bios, Primary graphics adapter.

Cheers!
Mike