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Old 08-16-2007, 04:29 PM
idiot_savant idiot_savant is offline
 
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I have a problem I don't know if it's a dead mobo....a friend of mine brought her PC to me and I checked it. the problem is when you switch it on, nothing happens....it powers up but it don;t display anything to the monitor...there were no beeping sounds.......but the light goes on.....I suspect a bad psu but when I replaced it with one from a working PC it's still the same...what could be the problem here?
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Old 08-16-2007, 04:54 PM
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The motherboard may have been damaged if the power supply went pop. It happens alot and unfortunately, anything connected to the motherboard could be damaged aswell. Do the fans come on when you try to boot the PC with the original power supply? If so, it sounds like the original power supply is OK.

Try disconnecting anything that isn't necessary to get the PC running. Only leave the RAM, graphics, PSU and CPU plugged into the motherboard, disconnect any IDE/SATA drives and take out any PCI cards and try it again. Try reseating the graphics card and RAM. Try taking one stick of ram out at a time and booting. Do you have any spare parts (RAM, CPU, Graphics)?

After that, it's a matter of eliminating each component. My first port of call would be to get a working motherboard and try the other components in that. Let us know how it goes

Last edited by Simmy; 08-16-2007 at 05:03 PM.
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Old 08-16-2007, 09:39 PM
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All good advice. You can also reset the CMOS by removing the battery for a little while then replacing it if you can't find the jumpers. I also agree it sounds like a dead mobo. I have seen this many times and its almost always the mobo.
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Old 08-16-2007, 09:56 PM
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Most of the times the problem you have is a dead mobo but apart from what Simmy says there is a quick thing you can test also. Just unplug the PC and reset the CMOS using the motherboard jumper. Sometimes the BIOS hangs and resetting it brings the mobo again to life. Give it a try in case you are lucky.
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Old 08-17-2007, 03:14 AM
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Sounds like a dead motherboard to me as well. A not-very-technical way to test for a dead motherboard (hey, it works for me) is if the motherboard has a PC speaker, take out all of its RAM. The computer beep like mad that there is no RAM. If it does this it is probably working as it can diagnose itself.
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Old 08-17-2007, 03:48 AM
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$10 says its either the video card or the slot
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Old 08-17-2007, 04:49 AM
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Quote:
Originally Posted by Mac View Post
$10 says its either the video card or the slot
I would have said videocard/slot as well but he said there were no posts beeps whatsoever so I still think its gonna be the mobo. It still could be the video card though, perhaps if you have an old PCI video card laying around you could test it?
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Old 08-17-2007, 02:04 PM
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thnx for all the answers...i'll try all your advise...
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Old 08-18-2007, 12:39 AM
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lol @ Bryce. Well i guess the video card slot is part of the mobo

Mate you should be looking for burned capacitors arround the video card slot. It can get pretty hot and dusty in there and if the 3D card fan gets clogged up with dust and stops things start to melt.



Good luck

Last edited by Mac; 08-18-2007 at 10:52 AM. Reason: dead link
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Old 08-22-2007, 02:25 PM
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Quote:
Originally Posted by Simmy View Post
....
Try disconnecting anything that isn't necessary to get the PC running. Only leave the RAM, graphics, PSU and CPU plugged into the motherboard, disconnect any IDE/SATA drives and take out any PCI cards and try it again. Try reseating the graphics card and RAM. Try taking one stick of ram out at a time and booting. Do you have any spare parts (RAM, CPU, Graphics)?
Hi, I'm a beginner-technician. I just want to know what the acronym PSU stands for.
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