No signal got from Motherboard [Solved/Closed]

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Computertech
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Hello,
i had problem since yesterday, my computer is windows xp desktop pc, which is old one of 10 years ago...
last month it got a problem of HDD crashed and i change the new hard drive... but since yesterday when i start the power button the cpu running but the monitor shows nothing... shows only "no signal"... so i thought monitor is good also check the cables etc all are good....and also try with another monitor but it also shows 'no signal check your vga cable' so i try to change the vga card which is connected externally in pci slot... but still dont get signal, the cpu fan running powersupply fan running, but if i connect speaker in the motherboard no sound.... no response from mother board... whether it is problem with mother board?or something else?
help me please... i am frustating...
Thanks in advance kioskea.........


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Is there a video port on the motherboard itself? if there is, then start with getting it running on that board first.
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Umm, I am not certain we are clear on troubles here. If the video signal is not present because there is not power to the board, then yes change the Power supply.

Your indication as posted from the beginning was no video. Do the fans spin up?
Computertech
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Hello,
yes ac3mark it spins up and the power button on lights up... but still no use... i didn't get into any conclusion that which part is not working.. i had doubt that if the fan spins if the motherboard is faulty?...
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If the fan spins up, and witness a "burning" smell coming from the motherboard, then the 99.9% of the time the motherboard is now good, and I would stop trying to recover it!
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thank you for your reply ac3mark... going to change the PS...
Computertech
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Power supply burned... I changed the power supply and now my pc running good..
Thank you..