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Boot failure after successful BIOS updat

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12 replies

by rgrowcock

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I have just updated an older ASUS P2L97 Mobo with the latest BIOS, now it won't boot. I followed all of the steps and got a "BIOS updated successfully" screen, which told me to reboot and load the new BIOS defaults. Now my system will not boot!It has Award Modular BIOS v4.51PG and is running a PII 233. It is an older computer that I am updating for a friend. Now it seems to be toast.

If I could get back to a command prompt, I could just reload the original BIOS and hope that would fix the problem, but I can't even get there. I will hang in one of two spots after detecting the drives. Either after Update DMI information, or just before that. Depending on the BIOS settings I select.

I have tried removing the CMOS battery and get a CMOS checksum failure after replacing and rebooting. I got the BIOS update from ASUS, so I thought it would be fine, so much for that thought. Does ANYONE have ANY ideas that I could try?

12 replies

by thechas

Just removing the CMOS battery may not reset everything.

Either go through the CMOS reset procedure, or leave the battery out for at least 1 hour.

If all else fails, there is a guide on recovering from a bad flash at:
www.amptron.com

I could not get to the exact page at this moment.

If you can't get the guide, I could e-mail a copy to you.

Chas

by rgrowcock

Tried everything listed in the Amptron guide, including Hot-swap BIOS (bad idea, fried the bad bios chip) and nothing worked. I am just going to buy a replacement and be done with it. The last time I try to upgrade a bios. Thanks for the help.Roger

by cg it

check your Boot order in the BIOS and verify HDD-0 is listed either as first boot, second boot or third boot. Default boot order is normally first boot floppy, second boot CD-Rom, third boot HDD-0...further, try reflashing. Further, try a bootable floppy. If you can get to a A: with the bootable floppy, you can use Scandisk and/or CHKDSK utilities to verify your HDD. It's possible the BIOS to O/S hand off is having problems. recreating your MBR might correct your problem.

by rgrowcock

My main problem is that I can't get to the A:\ prompt. If I could, I could restore the original BIOS. Thanks for the thoughts! Roger

by jrodri1636

Look at your manual for your system or motherboard for jumper or switch to reset the bios
if it is supported by the motherboard. Newer motherboards supported this procedure. If not follow the link Chas gave you.

by jrodri1636

Look at your manual for your system or motherboard for jumper or switch to reset the bios
if it is supported by the motherboard. Newer motherboards supported this procedure. If not follow the link Chas gave you.

by rgrowcock

No jumper for this function. I have left the CMOS battery out for an hour as Chas suggested, and am going to try that. I am still unable to reach the link, and hope Chas saw my request to email me the program. Thanks for your thoughts. Roger

by edsdave

Try going nto the BIOS and DISABLE cache, this should get you back to at least a DOS prompt.

by rgrowcock

This didn't work either. I finally was able to get the Amptron site and I downloaded the paper that Chas suggested. But so far, NO JOY on this either. I am running out of things to try. Thanks for your thoughts. Roger

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