I've installed a new gpu (radeon hd 6850) on my computer(AX3400-E3102). I've also changed the case and the power supply to a 700 watts OCZ.
Anyway, here is my problem. At first start-up, everything went fine, my computer booted normally and my screen was working. Then i installed drivers etc. At the second start-up, my computer screen stayed black and said No signal. I tried to switch the cables, link my motherboard screen output to my TV and my gpu screen output to my screen and it finally worked.
But now, I was playing a game, and all of a sudden, my screen goes black and there is nothing i can do to make him receive a signal when my gpu is connected to my computer.
So I took off the gpu, and my computer starts normally.
Also, when my GPU is connected, my motherboard doesn't make the BEEP sound when it starts up, but it does when my GPU is not in my computer
I do have an integrated gpu on my cpu, I did uninstall the drivers but it did not seem to make it work.