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crash after installing e-geforce 7600 gt

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by browsell

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Just installed a AGP video card on intel Pentium 2.66.
I later found out that I didn't have the proper power supply.
I have a 250 watt...the card requires a 350 watt.
Computer would not go to post and black monitor screen.
I removed the card and plugged into on board...same thing.
I then plugged in my old AGP card in case the on board was disabled.Nothing.
I then checked to make sure I hadn't loosened any cables on motherboard.
Everything powers up..hard drive..cd roms..led light on mother board.
No beep to indicate going to post and black screen.
Could I have blown something on the mother board.
There is no obvious signs (blown capacitors etc.).

Any help would be great...thanks Bill.

3 replies

by mjd420nova

Yes, that was what took out the system board. t just may have seperated a trace or found a cold solder joint in the connectors for the power supply to the system board. No obviously blown capacitors but it could have taken out a regulator chip. Investigate the bottom side of the motherboard. Doesn't that card also require another power connector cable from the power supply directly to the card?? A good digital ohmmeter would help you track down the fault that's stopping the new power supply from starting. It could even be another plugin card that's causing the fault, pull them all except for the video card and add them one at a time to see what's pulling it down to failure.

by browsell

I have already stripped the tower down.
removed all cd roms...cards etc.
I'm down to memory..on board video and Hard drive.
I guess the next step is to pull mother board and check for bad solder spots or trace the board with a meter.
I haven't replaced the power supply yet.
I'm trying to start up with the original equipment.
Thanks for the response.
I'll pull the mother board and go from there.
If I need to replace mother board do you have any suggestions ?
Thanks for your help. Bill.

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