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Thread ID: 68898 2006-05-14 20:52:00 PC won't POST ... last chance before the dump teemeeze (10407) Press F1
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454880 2006-05-14 20:52:00 I know this has been posted in other threads (which I have reviewed) and I have tried the vast majority of troubleshooting advice offered to date . However, after 14 hrs of troubleshooting I'm ready to give up and get a new mobo and hope for the best . Before I do here is my scenario . . .

I have a home PC with a Gigabyte mobo, DVD, CDRW, floppy, 512 RAM, 2 . 4 Ghz Intel . Additionally, I have an identical box without the CDRW and only 255 RAM but same mobo, etc that has never been run . (Been sitting around waiting for me to put it together for a couple yrs now . ) Sat morn my home pc, which had been running fine, had a flickering, fuzzy monitor and no mouse or keyboard life so I rebooted . It froze at the BIOS screen and beeped! I tried a few more times, it beeped every time and finally died; the monitor shows "no signal" and the PC won't post . Never dealt with BIOS issues before so after some online research decided to try loading my HD onto my alt box with twin mobo . . . presto! it worked and everything was running . But I wanted the working mobo in my nicer home PC box so I took the bad mobo out and slipped the alt one in and now the darn thing won't POST . No monitor, no floppy, no disks . . . nothing . Just runs power and fans . Tried bare bones troubleshooting, double checked led, switch wires, etc but still no signal, no post . Also tried alt vid card, alt ram sticks, moved everything around to alt slots, power box is at 115v, still won't post . Just hear the power of the fans . . . no cds, floppy, screen . . . nothing .

Any last minute advise before I dump this mobo (which I saw working just this morning!!!) ??

Your feedback is appreciated!
Thanks
Teemeeze
teemeeze (10407)
454881 2006-05-14 21:12:00 If the power supply from the working box fits the "nicer" one try using it. It coukld have been the power supply losing one of its outputs that caused the original fault. Assume from yr 115v statement that you are in a country that does use that voltage. PaulD (232)
454882 2006-05-14 23:05:00 also stip it back to basic's. really easy to get a faulty card/drive to stop it booting. tweak'e (69)
454883 2006-05-15 01:23:00 Already did that...no luck. Thanks for the input teemeeze (10407)
454884 2006-05-15 01:24:00 done this also...still no luck. thanks teemeeze (10407)
454885 2006-05-15 01:30:00 things I haven't tried... taking out the screws on the mobo (they're metal, didn't give me plastic lugs but then they are the same ones on it when it was working before). I can't think of anything else to try but my gut instinct tells me this mobo still works! ARGGHHH!!!
Tee
teemeeze (10407)
454886 2006-05-15 01:32:00 The possibility of the motherboard shorting onto the case somehow (aka, a standoff that should not be there). Pancake (6359)
454887 2006-05-15 01:35:00 Try a different psu. JJJJJ (528)
454888 2006-05-15 01:55:00 It is highly likely that one of the screws is in contact with part of the motherboard wiring and shorting it. Undo all the screws make sure they are not larger that the silver surround around each screwhole and are as close to centre as possible on each hole.
I had something similar recently and have heard of others like this.
One sure way to check this, take the mobo out of the case, and connect it all up on a desk and start it. It should boot fine. Or use the plastic clips
Myth (110)
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