since u said tat it might b my gc problems
is tat means my new gc has problem?? need to send back to seller??
or just bcoz i uninstall the old driver & unplug old gc then straight install new gtx 260 without using driver cleaner then cause this problem?

btw, my previous gc is 8500gt, run this game is barely enuf
then how to support latest games   tats why i just have this game but dun have other latest pc games
now focus on solving problems 1st, if u know the causes pls teach me also

yeah!! problem is solved thanks everyone who gives me suggestion, especially valho
btw, this game seems has some bugs
some websites state that if set the shadow quality to super high, the game might crash in the mission 1 intro
so i set it to high quality & no problem

as a normal pc user/gamer, i suggest u not to overclock it for safety purpose
btw, rivatuner is a software tat can b used to overclock gc
even though dmc4 is optimised for pc, super high setting in 1920x1200 resolution might also make gtx 260 stressful
i think tats why u didnt try it
btw, i alwaz find problems accidentally kinda bad sometimes

btw..can gtx260 perform good at 1920X1080 reso?..i dont play to play this crysis,farcry2,GTA4 for this reso, only for normal game like Tom clancy's H.A.W.X

erm... actually i havent install game yet
i just tried to run the patch to ensure it is not corrupt
anyone here has other solution?

Hmmm dunno if this question has been asked before...

When you have 2 LCD connected to a single GC, e.g. like my setup, 1 19" VGA and another full HD LCD TV thru HDMI - dual view, will the GC performance (for gaming) decrease? Are 3DMark06 scores going to be lower than just a single LCD output?