How to Recover from a bad BIOS update - Technibble
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How to Recover from a bad BIOS update

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A lot of computer technicians are other experienced computer users update their BIOS at some point usually because of a motherboard reporting temperatures wrong, not detecting certain hardware, not working with certain hardware or to allow the motherboard to accept larger hard drives. This article has steps you can perform to restore your BIOS and save your motherboard.

When you were performing the BIOS flash reprogramming you should have been shown the message below or similar:
“The BIOS is currently being updated. DO NOT REBOOT OR POWER DOWN until the update has completed (typically within three minutes)”

Either you didn’t listen to this warning, something interrupted the update or you used the wrong BIOS update leaving you with a corrupted BIOS. If your BIOS is now corrupt you will be unable to reboot and try the BIOS flash again, not easily anyway.

If the motherboard is an older one the only way you can recover the motherboard is to get the BIOS ROM reflashed using a ROM Burner/Programmer which some Computer Stores may have (you may need to call around) or you can buy your own.

In newer systems the flash ROM is soldered to the motherboard and cannot be replaced. However this doesn’t mean you will need to replace your motherboard, a lot of newer systems have special BIOS recovery procedures that can be done. You will need to consult your motherboard manual or motherboards manufacturers’ site to get these steps.

In the event that a recovery procedure cannot be performed you can do the steps below:

First off, you will need to open up the computer case and change a jumper on the motherboard into the “Recovery Mode Position”. Nearly all Intel Based motherboards and some 3rd party motherboards have a jumper or switch to recover the BIOS. Typically it can be found somewhere near the BIOS battery.

Jumper on Motherboard to reset the BIOS
Motherboard BIOS Recovery Jumper

  • Install the bootable BIOS upgrade disk which you previously created to do the original flash upgrade into drive A: and restart the system. If the update failed because you used the wrong BIOS update you should get the correct one and repeat this step. When the computer reboots there will most likely be no video prompts, however you can monitor this procedure using the floppy drive light and the PC speaker. When the PC speaker beeps and the floppy drive light is lit it means that it is currently copying the new BIOS onto the motherboard.
  • When the floppy drive light goes off and the PC speaker beeps (twice in most cases) the recovery should be complete. During the update procedure there might be pauses that looks like your computer is doing nothing, if so be sure to wait at least a minute to make sure the update is complete. When you are sure the BIOS update is complete and there is no more activity, power off the computer.
  • Change the jumper you changed before back into the original position so the computer can operate normally.

When you turn your computer back on your BIOS will be functional and you should be able to use your computer normally again.

  • RONOH says:

    explain the steps requred when recovering flash BIOS.

  • Administrator says:

    These are the “general purpose” steps. If you would like something more specific you need to look at the manual for your motherboard as each one is different.

  • rey says:

    You are right with your generalization, but in my case.when im updating the bios of my computer suddenly there was a power interruption.so now my problem is that the bios corupted.plz help me..tnx this is the model of the mobo P4VP-MX (ASUS)..TNX

  • mark says:

    I purchased a downloaded Bios update from eSupport.com. The flash failed. Now I’m stuck. Like most laptops, mine doesn’t have a floppy drive to boot from. In fact – now I can’t even boot period. What do I do?

  • hung tran says:

    followed your procedure on recovering a bad flash. does not work or i missed something.

    my mb is msi k9a2 plat with ami bios.

    thanks.

  • Digital Epidemic says:

    You Beatin round the bush like wastin time….
    Cuz people workin fast, Either, rain or shine,
    Step out the way son ,let people back in line,
    I thought you was tryin to show us how its done, But U just lyin!!!!!!!!!!!!!!!!

    Epidemic USA#1

  • Vincent Ruan says:

    How do I fix a currupted bios using CDROM PLEASE???????????????????????????????????
    I have no floopy and is a laptop. LG J.AP51A

  • Frank says:

    Thank you so much for this explanation.
    Recently I tried to update the bios of my Intel DX38BT and failed. Now I don’t have video and no beep. Anyway, it seems the pc tries to access to my DVDROM, but there’s no disc with the bios.

    I will buy a disc and try to get a floppy, too and I will let some feedback.

  • Wim Bervoets says:

    You could try asking for help at Wim’s BIOS forum at http://www.wimsbios.com/forum/my-motherboard-is-dead-f30.html

    grtz,
    Wim

  • Shane Fowler says:

    I hate it when my floppy drive light lights up. Who has a floppy anymore!

  • kwami says:

    can you show me where to get bios update for my arcelik laptop with insyde software ver 2.10. the maker is bekopc and model is m350/m375c

  • […] man check this out mite help https://www.technibble.com/how-to-rec…d-bios-update/ also here is a link for the user manual for that particular mobo (didnt know if you had one mite […]

  • Jackeline Coughran says:

    Excellent contribution.

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