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Help! Clear CMOS not working on Gigabyte GA H55 USB3

R

ralph8899

Junior Member
Hey all,
I'm new to overclocking and I changed some settings and now it won't post. In the manual for my GA-H55-USB3 it says I can clear the CMOS by either shorting the CLR_CMOS jumpers for a few seconds or by removing the battery for 1 minute. Neither of these options worked even when I tried shorting the jumpers for 2 minutes or removing the battery for 2 hours. Any ideas?

Thanks and I really appreciate the help!
 
I have had mine clear my removing the MOBO to interrupt the ground. Its a different model, but still when I took it out I had to set the BIOS all over again.
 
Maybe the jumper is faulty. If so, it would work in the "normal" postition because the jumper only connects two active terminals when clearing the CMOS.

Try using a small screwdriver or other metal object to short across the two terminals that are supposed to be used for clearing the CMOS. If it works, your jumper is bad, and, as WaTaGuMp, you will have to reset everything, starting with the date and time.
 
I tried unplugging the psu and shorting the pins with a screwdriver and paperclip, both with the battery in and out, but still the same result. Do you think the manual is being optimistic and maybe i should hang a paperclip from the pins for half an hour?
 
ralph8899 said:
I tried unplugging the psu and shorting the pins with a screwdriver and paperclip, both with the battery in and out, but still the same result. Do you think the manual is being optimistic and maybe i should hang a paperclip from the pins for half an hour?
Click to expand...

No. It shouldn't take more than 5 minutes. I think you may have a bad trace or solder connection to the battery. If you have a volt meter, you should be able to read the battery voltage between the two pins for clearing the CMOS when the jumper isn't shorting them.

It sounds like it's time for Gigabyte tech support. I don't know if this link will work, but give it a try. I've had good experience with Gigabyte's response time.

If your board is still under warranty, I'd suggest RMA'ing it for repair or replacement.

Good luck. 🙂
 
Unplug power, reseat ram.

I spent a bit of time resetting cmos on a system a couple of weeks ago and it was really finicky until i got into bios and reset everything.
 
Hey guys,
Thanks for all the help. I actually haven't been able to reliably clear the CMOS but I have been consistently booting into Windows and running Linpack, so I probably won't RMA it. For anyone else facing a similar problem, I just switched my RAM around so each channel has DIMMS rated at identical latencies. This may only be a problem for upper limits (I'm running 12GB with the i5 655K at 4.8Ghz ) since my processor has a not-so-robust memory controller
 
ralph8899 said:
Hey guys,
Thanks for all the help. I actually haven't been able to reliably clear the CMOS but I have been consistently booting into Windows and running Linpack, so I probably won't RMA it.
Click to expand...

It may still be a good idea to contact Gigabyte's tech support. They may have a fix for a known problem or other info that could help.

As an engineer, I personally don't like to hang onto known defective products because you never know what else may fail, probably at the worst possible moment. 😱
 
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