Computer doesn't boot after BIOS update

[arkhsphere]

Hello,

I assembled my PC there is one year. Everything was fine until few weeks. Recently, my PC started to shutdown brutally without warning me and in an unpredictable way. So I looked for advices around the web (I didn't know if it was a hardware or a software problem). Many advices were to scan for virus and update Windows and BIOS. So I updated my BIOS this afternoon. But, since, my PC won't start anymore. Nothing on the screen and I am not able to boot on USB or CD-ROM.

Is there a way to revert update without accessing BIOS or OS ? Or do I have to change my motherboard ?

My configuration is :
- Motherboard: P67A-D3-B3.
- Processor: Intel Core i5.
- GPU: AMD Radeon 6800 series.

[arkhsphere]

Ok, I'd just found the way to hard reset my motherboard. RTFM

But, it does not solve my first problem which is a brutal and unpredictable shutdown. Is someone has a clue ?

[Dark Mantis]

Hi,

Yes always a good idea that, to read the supplied info! If you had searched on the forum though I am sure that you would have found the same advice. 

[arkhsphere]

It was a panic situation for me, so I panicked on the forum ^^