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Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: alastor on December 29, 2013, 06:00:29 pm

Title: GA-Z77X-UD5H BBIOS and MBIOS LEDs blinking, no POST
Post by: alastor on December 29, 2013, 06:00:29 pm

Yesterday I shut down my PC normally and did not change anything. Today when I tried to power it up, fans started spinning, but I got a black screen (no POST, no beeps on Mobo, no debug LEDs lit up). I checked it without RAMs and only one RAM and without graphics card and a graphics card that I know for sure works correctly. None of these changed anything.

I noticed that the MBIOS and BBIOS LED's were flashing sequentially, each one staying lit for about 2-3 seconds. Does this imply that my BIOS is corrupted? How do I identify the source of the problem? Google returned nothing useful, most of the threads are unsolved or solved by completely different methods. How do I go about troubleshooting this?

By the way I have already tried clearing CMOS.

My specs are as follows:

Gigabyte Z77X-UD5H
Intel i5-3570k 3.4 GHz
G.Skill Ripjaws 2x4 GB 1600 MHz
ASUS GTX 680
Corsair AX850

Title: Re: GA-Z77X-UD5H BBIOS and MBIOS LEDs blinking, no POST
Post by: dmdilks on December 29, 2013, 08:28:22 pm

Have you tried switching it to the other bios. If you do switch it, do it with the power off. You board has a switch on it to go from you main to the backup.