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Bad Motherboard?

Posted by Cobbs [send private reply] at June 29, 2002, 02:31:43 AM

Earlier this year I bought a new computer. After getting it I took my network card from my old computer and put it in the new one. The network card had worked fine for over a year in the old computer but after three days in the new computer it stopped working and gaves errors regarding bad register values after reset when running dianostic programs on the network card. I contacted the tech support and got a replacement.

After putting this one in it gave the exact same error that I had recieved when the old network card stopped working. This one didn't work at all. I contacted tech support again and ended up following their instructions until they would finally send me another card.

I took the newest card and installed it (pretty generous tech support!). It worked for about three days, like the original one and then I got the same error all over again.

What do you guys think the problem could be? Could the motherboard have too much voltage and is wreaking the cards? I looked at the jumpers and it only allows me to change the cpu core voltage. I almost put in an old PCI video card to see if it would get ruined but then it would be difficult to get the computer to use the AGP one again due to it expecting a PCI card :-\ I've already searched on google and haven't found any of the same problems. Everything else with the computer works fine - but could it be a motherboard defect?

I guess this sums up why I haven't been active in TPU recently also.

Posted by CodeRed [send private reply] at June 29, 2002, 12:07:59 PM

You can't change the voltages on the PCI bus (without hard-modding the board) so don't even try. Are there other PCI cards in it that do work?

Posted by RedX [send private reply] at June 29, 2002, 03:04:08 PM

When you installed the card, did you touch the copper contacts or the ICs? If you did you might have zapped it with static electricity. This kills CMOS ICs like crazy.
PCI has a standard and they don't change that so easily.


Posted by Cobbs [send private reply] at June 29, 2002, 04:09:05 PM

Nope, there are no PCI cards in it that work (the network card is the only one though) but I used the modem in it from my other computer for a day and the modem still works but it's in my other computer. I can't remember if I touched the copper contacts. Would the other PCI slots work if one was wrecked?

Posted by RedX [send private reply] at June 29, 2002, 07:07:37 PM

Every slot is a parallel connection of the PCI bus. It's one bus. If you do something wrong in one slot you'll damage the bus as a whole. So if the card did damage, none of the other slots will work eighter.
Also this bus works at a high speed so it's very important to make the best connection possible. A bad seated card can mess up the datatransfers of any other card on the bus.

About the voltages: The standard indeed mentions 5V and 3.3V connections. If the card needs 3.3V it should be written somewhere in the manual. If it did and the mobo gave it 5V, then it's fried (serve with fish).


Posted by CodeRed [send private reply] at June 30, 2002, 12:51:12 AM

Ummm.... a long shot, but the PCI slot your putting it in is not a 64bit right? The card fits perfectly with no leftover room in the slot right? Longer slots are 64bit PCI. Another longshot, but if none of your PCI slots are working, the south bridge might be damaged.

Posted by Cobbs [send private reply] at June 30, 2002, 01:07:55 AM

Yeah, it fits in without extra room. I'll start looking into the south bridge being damaged.

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