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GA-X99-UD5 rev 1.0 power ON issue

 
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post #1 of 3 (permalink) Old 03-20-2019, 07:41 AM - Thread Starter
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GA-X99-UD5 rev 1.0 power ON issue

Greetings,

My GA-X99-UD5 rev 1.0 motherboard has operated flawlessly for a couple of years. Today I encountered a really strange issue. I powered on my computer as usual and it would not power up. Used the power ON button in the motherboard and it powered on but no debug LED numbers were displayed. I could see all the lights in my computer case on but hardrives would not power up either, no keyboard signal nor anything in the screen.

Power off using the power ON button would not work so I had to cut power, wait a few seconds and power ON again every time. I tried Clear CMOS button to no effect. I checked all PSU voltages with my FrozenCPU PSU tool, all checked fine. Tried another power supply just in case with the same results.

I was about to give up and replace motherboard but it occured me to try the backup BIOS. Suddenly everything worked, the computer booted up directly into windows desktop (without entering the login screen). OC settings are the same as they have been for the past 2 years, RAID configuration appears to be untouched.

Now I'm backing up everything. Any clue about what's going on?

Thank you in advance for your replies.

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post #2 of 3 (permalink) Old 03-20-2019, 07:58 AM
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Well my page didn't load all the way so i first responded to checking PSU. But since now everything has loaded and I see you did all that and it works now lets look at the bios. Sounds like something corrupted one of the bios chips. I would re flash and you should be good to go.

Last edited by Moparman; 03-20-2019 at 08:08 AM.
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post #3 of 3 (permalink) Old 03-20-2019, 11:19 AM - Thread Starter
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Quote: Originally Posted by Moparman View Post
Well my page didn't load all the way so i first responded to checking PSU. But since now everything has loaded and I see you did all that and it works now lets look at the bios. Sounds like something corrupted one of the bios chips. I would re flash and you should be good to go.
Indeed. Manual states the following:

What is DualBIOSTM?
Motherboards that support DualBIOS have two BIOS onboard, a main BIOS and a backup BIOS. Normally, the system works on the main BIOS. However, if the main BIOS is corrupted or damaged, the backup BIOS will take over on the next system boot and copy the BIOS file to the main BIOS to ensure normal system operation. For the sake of system safety, users cannot update the backup BIOS manually.


So I presume I don't need to do anything else, the main Bios should have been restored already. Perhaps this was caused by sleep mode in Windows?

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