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Cleared cmos by accident.

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May 21, 2012 11:03:41 PM

Im building my first computer and i attached the motherboard power cable and cpu cable, and it powered on and gave me A6 code. I was trying to power it down and my dad hit the clear cmos button and it came off. I pressed the power button right after and it powered back up. I attached the video card and plugged it into the power supply and when i tried to power on nothing happened. I replugged everything and took out the video card and it still won't power on. I don't know if the clr cmos buttton did something or if the board just died. Please help!

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a b V Motherboard
May 21, 2012 11:56:11 PM

Clearing the CMOS while the computer is powered can damage the motherboard, you should always clear the CMOS the way it says in the manual with the power cable disconnected.
May 22, 2012 7:59:32 AM

pjmelect said:
Clearing the CMOS while the computer is powered can damage the motherboard, you should always clear the CMOS the way it says in the manual with the power cable disconnected.

Yeah i wasn't trying to clear it, i was trying to turn off the motherboard after i turned it on to see if it was working and then my dad came and clicked the button -_-. But i powered it back on right away and it turned on. How exactly does it damage the motherboard? And is it possible to take out a cpu and place it in another motherboard or will i have to buy another cpu also?
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a b V Motherboard
May 22, 2012 8:43:05 AM

If you have damaged the motherboard by clearing the CMOS while the power is on then you have damaged the chip set which is not repairable, however all other components such as the CPU will be fine. The symptoms of a motherboard that have been damaged in this way are being unable to turn on the computer or the computer is on all the time but no boot in both cases.
Have you tried taking the video card out and seeing if it powers up? if it does then the motherboard is probably OK and the power supply is suspect, if not the motherboard is probably dead.
May 23, 2012 5:04:10 AM

pjmelect said:
If you have damaged the motherboard by clearing the CMOS while the power is on then you have damaged the chip set which is not repairable, however all other components such as the CPU will be fine. The symptoms of a motherboard that have been damaged in this way are being unable to turn on the computer or the computer is on all the time but no boot in both cases.
Have you tried taking the video card out and seeing if it powers up? if it does then the motherboard is probably OK and the power supply is suspect, if not the motherboard is probably dead.

I got it to work! Clearing the cmos while the computer was on damaged the power supply instead of the motherboard! Luckily i returned the power supply and got a new one and when i plugged it in it started up. I hooked up the video card and keyboard and on the monitor it went into UEFI setup. It detected all 4 of my ram and cpu so im guessing those aren't damaged. It had a dr debug code but it think that was because i had no hard drive setup. Im getting another power supply that i am waiting to get replaced so when i get that i'll attach everything and see how it goes.

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a b V Motherboard
May 23, 2012 8:27:22 AM
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Clearing the CMOS while the power is on can not damage the power supply, what is more likely is that adding the graphics card overloaded the power supply.
June 1, 2012 4:32:49 PM

pjmelect said:
Clearing the CMOS while the power is on can not damage the power supply, what is more likely is that adding the graphics card overloaded the power supply.

Maybe but the power supply was an 850 watt so it should have had enough power.
June 1, 2012 4:45:24 PM

Best answer selected by Bob94.
a c 328 V Motherboard
June 2, 2012 10:02:06 AM

This topic has been closed by Nikorr
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