Dont know if it's similar to your problem but here's my case:
Brought a 17" Dell Square LCD, installed Win 7 & Win XP.
Installed games (On Win 7: Metro 2033, Just Cases 2 On Win XP : FEAR,FarCry,Crysis,Singularity,BioShock)
Moniter is set at 1280*1024 60Hz, gaming is also done on a mixture of...