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Just overvolted my Northbridge.. Help Needed getting it back to normal

Last response: in Overclocking
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October 8, 2012 4:25:06 AM

I just overvolted my Northbridge on a Gigabyte MA790GP-UD4H board for to attempt to breath some New life into an old Phenom II X3 720 Black Edition that I never bothered to OC yet. I attempted set the clock multiplier to x18 for the CPU. I also adjusted the multiplier for the Northbridge as well as the voltage. The default VCore voltage is 1.325 volts. I tried +0.050 or + 0.075 volts more and it was not stable, so I bumped it up another 0.025 volts, and now I do not get display to my graphics card. I am unable to go into the BIOS and read settings or change them now. My motherboard does have a Dual-Bios, so I might be able to copy over the default settings on the second BIOS and get it back. My PSU, and fans still come up, and when I put an Ubuntu DVD in the drive, I hear the drive trying to read the DVD I think. But in worst case scenario, I may have fried something :-(. What do you guys think?
October 8, 2012 4:37:51 AM

I think you should try resetting the cmos jumpers or removing the cmos battery. Doing that should reset the BIOS.
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October 8, 2012 4:56:57 AM

I'll give it a try. How long should I leave the battery out for? And should I remove the power from the PSU for that to be effective?
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October 8, 2012 5:00:39 AM

1. Unplug system.
2. Remove CMOS battery
3. Put it back in
4. boot up

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October 8, 2012 9:37:14 AM

Thanks! Everything seems to be back up in order!
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!