BIOS download screws up graphics

so when i play guild wars it crashes with to much graphic usage like alotta fire storm or too much spells and when it crashes it says get a bios update. so i did now the graphics are very squarish and some things are unreadable. id change it back but i dont know what it came with and im pretty much screwed.

De-install your current videocard drivers, install new ones.

If you have a graphics card, go into your BIOS and disable the On-Board graphics.

Sounds like compatability.. I'd def go for the drivers. Make sure you uninstall the previous ones correctly first. The onboard graphics setting shouldn't matter since that only comes into play if a video card isn't detected in the slot but sure, turn it off anyway.