vid/card prob?

hi ppl, my sons comp is a duron with a gf2 vid/card. For some reason it will not boot the moniter up, but will boot up on comp internal SIS card. taken card out & cleaned it seems fine but no go, it was all working ok couple days ago. Had the power supply changed couple weeks ago? Anyway do you think video card rs? or some driver problem?

 

try going into the bios setup (typically delete or f1 or something... it'll tell you on the screen when something shows up) and tell the computer to default to the agp graphics if the geforce2 is agp, or default to pci first if the geforce2 is pci. it's a matter of the computer choosing between two video cards, and continuously choosing the wrong one.