Ok, today I upgrade my PC with a 4890 ATi card. It was correctly installed, I install the drivers, then I start playing a video game, then a triple flash and a smoke raised from my PC then nothing, the computer simply don't start at all. I simply don't know why there's still that lil cloud above my head that kept make my day worst but there's now a lot of problems : My 2 HDD can't be saved since I gave the external adaptator to a friend that never gimme back it, I can't send the card back, because they will say it's a short circuit and it's not on the warranty (read the manual), I'm not sure if it's the power supply (I simply can't buy one just to test).

Once again never ever buy ATI, each ATI products I buyed give me problems and not it even burn my entire computer, thanks !