so i currently have a a6000n desktop. i made a thread way back about how my 8800 gts g92 wouldn't work with my desktop (long story short, i gave up). but now, my 7600 gs and 7950 gt won't work (i swear they used to work). i used to play games using the 7950 gt but now, all i get is a black screen. i reinstalled the latest drivers just now by using my IGP to access the computer and even then, i just get a black screen when i plug in the 7600 GS. the 7600 GS works up until the windows loading screen ends (i have XP), then the screen turns black and the little light turns orange and starts blinking. anyone know what the problem is? the computer works perfectly fine with the IGP, but adding either graphic cards messes it up. thanks for reading. any help would be much appreciated