GIGABYTE 990FXA-UD3 unexpected shut down and BIOS corruption

bogo75

Reputable
Dec 11, 2014
7
0
4,510
Hi guys,

My PC is shutting down unexpectedly. Sometimes do not restart. Last two times tries to start again, but couple of times fails. Starts for a few seconds and stops again. Again and again after show me message that BIOS is corrupted and recovers it. After Windows starts normal.
I did these things – cleaned components, changed cooling paste on the CPU and scanned for viruses with Microsoft Security Essential. After went to the service and tested power supply. They told me everything is ok. Tested PC with Prime95 all night and nothing. Before three hours problem appeared again.

My Motherboard is GIGABYTE 990FXA-UD3,
CPU – AMD FX 4300 Quad Core
8GB RAM
GPU – NVIDIA GeForce GTX 650
Windows 7 Ultimate

Give me advice, please?

Thanks in advance!
 

bogo75

Reputable
Dec 11, 2014
7
0
4,510
Sorry, I posted this two times. I didn't see that is published below. Please, admins remove one of my threats.