did you checked all the cables???, some cable could be loose in there, also if you opened the machine without proper grounding equipment you could fry your hardware WITH ELECTROSTATIC DISCHARGE

FIRST THINGS FIRST

check the cables, all of them

if nothing happens, maybe the graphics card is loose, it can happen, just push it gently towards the motherboard

if everything still the same , it could be a hardware problem, a dead cpu can have that effect, same with dead ram, or there could be a shortcut which is the hardest to spot.

if nothing else works, shoot the dang thing, and build one. ..... kidding.

hrah

Update graphics drivers and make sure the game is patched up.Cyborg-21

Ive got ati's 7.3 driver and it is the demo  

BF 2142 doesn't work in widescreen resolutions. You'll have to try setting it to a normal resolution your monitor supports, probably 1024 x 768.Teufelhuhn

ok but that dosent fix things either it's still really bright and pixelated