okay so my computer was recently messed up so i had my dad reinstall windows and everything on my computer. but now it seems to be stuck at 640 byc480 resolution.... when i start my computer a popup comes up on the taskbar saying "screen resolution is really low. click this balloon to fix." but that never does anything... and i tried display settings. that didnt work either, when i go to look at my monitor and chip and stuff nothing is filled out, its just all blank. and when i click drivrs it says VGA something... please help.