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Bad Motherboard???

By toexposure ·
I just reformatted a hardrive for one of my students. I also installed a new sound card and had the pc working beautifly. Now the system will not send a image to the monitor, nor will the mouse, or keyboard work. It looks as if there is eiher an electrical problem or the motherboard is going. I checked all cables, they are fine. I am totally lost on this one. Maybe the answer is looking me straight in the face!! Please help. You can post or e-mail me. Thanks a bunch :)

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Bad Motherboard???

by xj0 In reply to Bad Motherboard???

disconnect all cables, take out all cards except Video card if you still have the same problem change the vid card. to know if it is the powersupply or motherboard check the voltage if you have multimeter in the powersupply, it should be ?5 V
Goodluck

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Bad Motherboard???

by toexposure In reply to Bad Motherboard???

The question was auto-closed by TechRepublic

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Bad Motherboard???

by csmith In reply to Bad Motherboard???

If the computer was working fine, and one time it was turned it on and these symptoms occurred, the first thing to check for is the beep. If it did not beep, check "power good" on the main connector to the motherboard with a multimeter. This failureis common. I have replaced two power supplies in different machines in a week because of it. If this is the problem, it usually does not harm the system at all. Just replace the power supply. If the computer beeps, it has gone through the POST and the first thing to suspect is a practical joke by one of the students. I have been called to "repair" computers where the monitor intensity was turned all the way down, the contrast was all the way down, the mouse ball was missing, etc.
Regards, Chris

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Bad Motherboard???

by csmith In reply to Bad Motherboard???

I have seen lightning strikes on the Phone line do this also. The Modem was blown and the Video card was also blown.

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Bad Motherboard???

by toexposure In reply to Bad Motherboard???

The question was auto-closed by TechRepublic

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Bad Motherboard???

by wlbowers In reply to Bad Motherboard???

Check your memory. Is it seated all the way in its slot. Swap it out if it that is not the situation. If you have an agp video card make sure it is seated all the way. Some times they will jack up in the back.

Good Luck Lee

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Bad Motherboard???

by toexposure In reply to Bad Motherboard???

The question was auto-closed by TechRepublic

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Bad Motherboard???

by grantcom In reply to Bad Motherboard???

INPORTANT!!! Unplug the power cord from the PC first then wait about 20 seconds or hit the power switch to drain off the caps on the Motherboard....this is extremely important as not doing so can sure enough fry a motherboard or device if this system has PCI and is ATX. Remove all cards including the video card...now reinstall the video card ONLY. If it is a SLOT 1 type processor ( Side Edge Contact) they can also loosen up, particularly after going inside the box and moving things around...tryreseating it also. Try a reboot. If it fails to boot try some of the other recommendations but I would guess it is Hardware related not driver related. Modems can get hit and hold down the entire machine...it could be the culprit.

Good Luck

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Bad Motherboard???

by toexposure In reply to Bad Motherboard???

The question was auto-closed by TechRepublic

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by toexposure In reply to Bad Motherboard???

This question was auto closed due to inactivity

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