Gigabyte MB not responding

[el-Capitan]

It appears I have shot my Gigabyte GA-Z68MA-D2H-B3 rev. 1.0 , but I want to run this past you guys, see if you have any good ideas.

Background :

i5 2500k (SB)
Seasonic 620IIs
UEFI BIOS 1c (latest)
In use for 26 months

This board has always had a little of an oddity. On boot, the CPU fan spins, stops/slows, spins up again, boots. At times, he'd spin, stop fan, halt boot. A BIOS update rid the latter.

Still, when overclocking (3.5-4.4GHz, VCore max +.07V) he would occassionally not boot (cold or reboot) taking abt 30sec to load the failsafe BIOS, then asking to load BIOS defaults. Annoying, but bearable.

CPU performed well when OC'd. Can't remember having a BSOD, reboots or crashes.

Last night :

Win 8.1 Pro (RTM) needed to reboot to install WMC. He reboots once, says he needs to do it again. Dead.

I tried resetting several times. Eventually I cleared the CMOS but still no boot. I disconnected and removed all, incl. GFX, but nothing. Cleared the CMOS again (several times now) and I finally get the BIOS, giving me : enter BIOS, load default and boot, load default and reboot. Neither option will get it to POST. Instead, it still takes me some 5 minutes of clearing the CMOS over and over to get this screen.

I have yet to try a different PSU, but that is quite the operation.

Anyone have any ideas?

 

[Kenmitch]

Did you try with only 1 stick of memory yet? Sometimes if you unplug the power supply and hold the power button on case or jump the jumper for power on the MB for a little while before resetting the cmos it helps.

If all else fails just blame it on 8.1 rtm

Just kidding about the 8.1 as I'm currently trying to make the transition from Win 7.

 

[el-Capitan]

Did you try with only 1 stick of memory yet? Sometimes if you unplug the power supply and hold the power button on case or jump the jumper for power on the MB for a little while before resetting the cmos it helps.

If all else fails just blame it on 8.1 rtm

Just kidding about the 8.1 as I'm currently trying to make the transition from Win 7.

Thanks for the input.

Yes, I did try one stick in slot 1 of 4. After brief power up and fan spin, it shut off. Added a second stick into slot 3. Board "booted" into the problem described in original post, i.e. does not make a difference.

I assume the board requires minimum two sticks. I have not yet had the time to rotate sticks. Maybe this evening.

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The board powers on when the CLR_CMOS jumper is shorted. If I keep the short, the board will power on repeatedly in short succession. I have tried shorting AND holding power or reset, but it does not make a difference.

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I like 8.1. So much in fact, that I was considering to put it on my HTPC. I was just installing the WMC add-on on my main rig to test if the Ceton tuner works with 8.1. Now look where that got me....

 

[el-Capitan]

I took one of the BIOS chances to re-flash the BIOS. Now all works again! Thanks so much for you guys input.

 

[country2]

good to hear...was about to tell you watch booting with the jumper shorted on the cmos as I corrupted a bios chip once doing that.

Running same board in my sons computer and its been great so far.