BIOS rom checksum error on 4G4A+

[XMan]

I'm not getting much if any help in the Motherboards forum, so I'm posting again in here . . . .

I'm not sure what exactly happend. I have an Epox 4G4A+, and it must be psychic or something and know that I was thinking of upgrading it.

I tried to flash to the newest BIOS to see if it supported HyperThreading. I used the Alt-F2 method rather than using a boot disk . . . probably my problem, I don't know. But something happened when the BIOS flash completed, and it rebooted, like it normally does.

Now, however, it gives me a "BIOS checksum error", then asks for a system disk. I stuck the disk with the BIOS .bin file into the drive, and it loads AWDFLASH, then tries to flash the BIOS.

After a moment I get the following error message:

"SST 49LF004A /3.3V

The program file's BIOS-string does not match your system!"

I did some searching on the 'net for this, and I found some mention of using a /nbl on the .exe, but I'm not sure exactly how to do this. I have minimal keyboard input. I've tried editing the .bat files included in the BIOS flash file, but to no avail.

I've tried multiple BIOS', including the one I had when I tried to flash it, and that doesn't work, either. Each BIOS file I try gives me the error.

I set the reset CMOS jumper, unplugged the power, and let it sit for half an hour - same problem.

Any ideas? I've got a chip puller, so I'd have no problem pulling the BIOS chip out if I had to, but obviously I'd like to be able to rectify the situation tonight or tomorrow.

Thanks for any input.

 

[Poohbee]

If you overclocked your CPU and flashed your BIOS, then that is what screwed it up. I ended up RMAing the board for another one. You might try to get dr. DOS and load that up and see if you can boot load the /nbl command switch. if not you might have to get a new Bios or ram the bios.

 

[XMan]

CPU was not overclocked when I tried to flash the BIOS.

I've got a Dr. Dos boot disk, but the computer will not load it. It looks for a floppy with Awardflash on it and will nothing else until it gets the Awardflash program. That's when it tries to recover the BIOS automatically.

Is there any way I can force it to use the /nbl switch? I have no keyboard input whatsoever, I can't even get a command prompt.

 

[cmf21]

I had the same problem on my 4g4a when trying to update to the latest bios. I don't remember how I solved the problem but I eventually did. All I can say is that it was a PITA. Which method did you use. I think I tried the alt f2 and boot disk method but neither worked. I believe I ended up using the awardflash utility and it worked fine. Don't know why the other's wouldn't.

 

[XMan]

Hmm, I wish you could remember how you fixed it. I guess I'll go ahead and take it out and put it back in the box so I can exchange it at Fry's tomorrow.