Buzzing Sound & Black Screen, no power to USB devices

whatami-doing

Commendable
Feb 28, 2016
5
0
1,510
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When I was playing the Witcher 3, suddenly there was a buzzing sound (in my earphones) and a second or so later my computer had a black screen of death. When I turn it on, the fans start spinning, the lights turn on and everything is normal but the keyboard and mouse appear to be disabled or not receiving power, and the Ethernet cable doesn't light up.The monitor says, detecting signal, then states no signal detected and turns black. However, the weird thing is, I have a USB fan connected to the computer and it works perfectly.

Not only that, I have had this problem before, with the same symptoms. I sent it to the repair shop but the guy said it worked perfectly. So I took it home, it's been a few months now and the problem has come back. As far as I know my computer isn't overheating; I've played intensively for hours before and nothing has happened.

My CPU is the AMD FX-8320 and my gpu is the Sapphire r9 390. Both are not overclocked, and I have a v750 Cooler Master CPU.
 

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