Hello everyone. I'm have been reading and i'm still confused about what to do. I have an Alienware m17 x r4 (from 2012) with one geforce gtx 675m who just stop working. And after looking for some replacement i find one m680 4gb. so i bought and i install it and it was working the first time without problem. But After restarting to the problems start and now i always have 8 beeps and a black screen. I can't make work the internal graphics card because i have a 120hz screen. i tried so far clear the cmos. Make new repaste. I open everything and take of the cable from screen and put it back. I try my old gtx 675m who now only work with external screen connect and it works without beeps. but the screen its always flickering. I have a official bios on A13, and i don't know if its a good idea to downgrade for an unlocked version. and i don't know what else to do. Can someone help? Thank you.