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Mobo alarm sounds constantly at startup

MY ax34 mobo recently started sounding an alarm constantly at startup. The video displayed "BIOS ROM checksum error Decting floppy drive A media Drive A error. System halt. I have changed CPU, memory, power supply, disconnected everything except mb, cpu, mem, and video, and still the same.

Posted by DONLEL ESTAB on

  • DONLEL ESTAB Sep 17, 2007

    I can't access the "A" drive to boot so I don't know how I am going to flash the bios.
    Is there another way?

  • DONLEL ESTAB Sep 18, 2007

    I took the CMOS battery out for 4hrs, shorted the CMOS jumper, returned it to normal, but when I turn it back on, I get the same message:

    "BIOS ROM checksum error

    Decting floppy drive A media
    Drive A error. System halt."

    It will not access drive "A" thus I cannot boot
    from the floppy. All the while the alarm sounds continously.


2 Answers


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Firist thing i would do is clear the CMOS by means of the jumper onboard, and at the same time take the button cell battery out of the board and let it sit for 5ish mins to clear the cmos completely. If when you reinsert the battery and put the jumper back you still have this issue i would recommend flashing the BIOS. If you have never done this make sure you dont have any storms near and if you have bad power issues (electric company sucks) i would recommend using a backups so you dont damage the BIOS. Dwonload Follow the instructions to flash your bios. HOWEVER READ THIS!!!!!! Do you have a: ax34 ax34 II ax34 Pro ax34 Pro II ax34-U If you have ANYTHING other than the ax34 then goto to get the one for the right version. IT IS ESSENTIAL THAT YOU DO OR YOUR MOTHERBOARD WILL BE UNUSABLE!!! Anywho let us know :-D

Posted on Sep 14, 2007

  • Anonymous Sep 17, 2007

    Typically if you remove the cmos jumper and insert the floppy with the bios image on it it should reimage it automatically. Just make sure the image in on the floppy's root directory and not in a folder.




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U change u r mother board early

Posted on Sep 14, 2007


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