Cannot get passed saving BIOS

Posted on 2009-12-21
Last Modified: 2013-11-09
Changed the motherboard battery on an HP Pavillion xw4400. Of course all the BIOS setting went back to default. Now, when I boot, I get the message that the ROM Options have changed and need to be saved. The computer then hangs with the F1: Save Changes prompt at the bottom of the screen.

I've pulled the CMOS battery, unplugged all non-essential things from the motherboard. No good. Can't F10 into the BIOS, it hangs at the Save Changes prompt first. Same with trying to get to the boot menu. Considered reflashing the BIOS but I can't get the machine to a place where it will boot from any kind of media.

Any help would be greatly appreciated.

Question by:KenEisman
    LVL 3

    Expert Comment

    Normally, there is also a jumper you can change to erase the BIOS...but I'm not sure where you would find it. You might look close to the CMOS battery, or in the owner's manual for your motherboard.
    LVL 1

    Author Comment

    Well, that's the problem... the BIOS has already been erased. I don't need to erase it again. I need to find a way to save the automatically adjusted settings (memory size in particular), before the PC will continue to boot.

    Thanks anyway.

    LVL 4

    Expert Comment

    HI Ken

    I found a document on the web for you. It seems that this is a very common problem with Pavillion series.
    It is the card reader who is causing the problem it seems.

    Here is their steps to repair it :

    1) With the computer power unplugged (duh), open up the case & disconnect the card reader cable at the card reader itself - NOT the end that connects to the motherboard header. Make sure the cable end is not touching any metal components before proceeding to step 2 (another duh).

    2) With the cable still disconnected, fire up the computer. The tech support doc says to let it boot into Windows and stay there for about 5 minutes.

    3) Shut the computer down and reconnect the cable to the card reader.

    4) Turn your computer back on - your memory card reader will work and, most importantly, the computer will no longer hang at POST!

    You may want to check this link :

    PS : Use at your own risk ;)


    LVL 26

    Expert Comment

    Your new battery is bad so the settings aren't being saved.
    LVL 91

    Accepted Solution

    it looks like a bad mobo to me
    if it hangs during the save Bios, chances are you have no more bios = dead mobo ... sorry
    the only way out i see is if the board has a recovery bios option - check your manual for that. (mostly accessable with a key combination : Alt+ F2 for Asus)
    LVL 18

    Expert Comment

    by:Ravi Agrawal
    I am with PCBONEZ & nobus-

    Check them in Order:

    --Keyboard really connected & the Bios interpreting it.
    --Bios Battery really having the Juice

    If both are good, then nobus is proabably right,

    --failed BIOS flash or
    --bad motherboard

    LVL 91

    Expert Comment

    the reason being that a bios flash may not be interrupted (and that was what you did)
    LVL 26

    Expert Comment

    Changing the battery doesn't Flash the BIOS.
    It clears it. - Not the same thing.

    You may have hit it with some static while you were in there.
    - That could corrupt a BIOS.

    Also check floppy and drive cables are properly attached at both ends.
    LVL 1

    Author Closing Comment

    Bad mobo

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