P4VMM2 Syntax Motherboard Dead after BIOS Change-Cannot clea

basic15

I have been trying to setup bios for ddr instead of sdram and I must have saved BIOS settings with problem, Immediatly and thereafter, Computer fans start for a part of turn and stop, Motherboard dead. I have tried to clear the BIOS by changing jumper to 2-3 and removing the battery, even removed battery overnight and I cannot clear the bios. (The motherboard manual says that all you need is to move the jumper. It does not even mention removing battery.)

I have the old sdram installed and the BIOS worked before I did the Save. Sad

Any help would be greatly appreciated.

Thanks

cp · Posted: Fri Aug 10, 2007 6:29 am Post subject:

did you switch off the power supply or disconnected it properly (pulled the plug)? otherwise the mainboard will be powered by the standby voltage.

Noel · Posted: Sat Aug 11, 2007 4:21 am Post subject:

Do you mean the cpu fan turn only a little then stopped? P4VMM2 has many jumpers to consider even switching sdr to ddr and vice versa. Please elaborate.
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Motherboard saved!

basic15 · Posted: Thu Aug 16, 2007 5:09 am Post subject: Reply to both of the posts

Yes, I did disconnect the power cord and push the front Power Button to clear all power from board. When I had the problem, I had not changed any switches on MB and the old SDRAM was reinstalled. I had been able to boot just before I saved the BIOS. I do not know what might have changed in BIOS. I was looking at settings inorder to change to DDR, but I had not changed anything at the point of failure.

As for the fans, they just move enough to know that they get a very short burst of power.

Noel · Posted: Sat Aug 18, 2007 9:10 am Post subject:

well, i think you have to check your VRM circuit first before doing your next plan. I suspect one or more MOSFET are bad. Check it out first why there is only a "very short burst of power" then stoppped.
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Motherboard saved!