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PC No Boot push down on mb it boots chks

By Casemaker ·
Hi, I have a pc in my shop, at the customers site it would not boot, video down on mb monitor blank, no fan spinning green power led on, no hdd activity. I have changed power supply nothing, changed memory nothing, reset MB checked for solid connections, nothing, checked all cables and ps output OK.
When I got it back to my shop as I was looking inside I pushed on mb and it boots. Error message cmos cheksom error message and cpu has changed go into setup. I do go into setup and reset the cpu internal clock and chang the date to today. I replaced the cmos battery as well. When it wont start I push down on the mb near the cmos battery and it boots. Now it appears to boot without incident. I am concerned if it is an intermitent failure and Ibring it back. Should I consider a failed mb or anything else.
Thanks

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

At all times the led on the mb stays red. It stays on without the power cord plugged in. When I unplug the monitor it goes out, if any of this helps.

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

When it does boot, I am getting a single beep.

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

Power led stays on even when the computer is not running.

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PC No Boot push down on mb it boots chks

by steve In reply to PC No Boot push down on m ...

My guess would be that there is a crack in one of the traces or solder joints on the mb and when you push on it it makes the connection. We had in the shop about 6 months ago that was similar and ended up being a cracked trace near the kb plug. Replacing the mb is probably your best bet.

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

Thank You!!

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PC No Boot push down on mb it boots chks

by jcsmith_pgh In reply to PC No Boot push down on m ...

Another possibility that I have run into in the past is simply that some part of the motherboard is touchg some part of the case, or something in between them. I had a similar problem and found that there was some mobo to metal contact, so I cut a piece of anti-static bag and put it in between and solved the problem.

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

Thank You!!

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PC No Boot push down on mb it boots chks

by ojmj In reply to PC No Boot push down on m ...

Sounds like there is a break in one of the circuits on the board that closes when you press down. Suspect replacing the m/b is the best long-term solution.

Good luck.
OJ

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PC No Boot push down on mb it boots chks

by Casemaker In reply to PC No Boot push down on m ...

Thank You!!

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PC No Boot push down on mb it boots chks

by dcosgrove In reply to PC No Boot push down on m ...

Just a comment, you may have a short under the board. The checksum error is normal, though, you said you "reset" the mother board. If you clear the CMOS you will get this message the first time it boots. Otherwise, I agree with the other answers. Cold solder loint, cracked board or debris under the board. Did the user try to install memory or a new card? Maybe he/she pushed too hard.

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