[OT] Cannot save BIOS settings

[Tod Merley]

> Date: Thu, 23 Feb 2006 16:51:28 -0500
> From: "James He" <icrazy at gmail.com>
> Subject: [OT] Cannot save BIOS settings
> To: fedora-list at redhat.com
> Message-ID:
>        <fd0f51b90602231351h361b635cx4da7fce0941a8534 at mail.gmail.com>
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>
> Hi, all!
>
> This might be off-topic, but since we are running FC on this machine,
> so maybe you can help.
>
> I replaced a bad motherboard with a new one for one computer and the
> computer started to be working again. The only problem now is that I
> am not able to save the BIOS(Phoenix) setting on that computer, that
> is to say, the default setting will always come back automatically.
> This is not acceptable, for we need to boot the computer from network,
> but the default booting sequence prefers to boot from hard disk, on
> which we do have a bootable operating system.
>
> The BIOS reset jumper is in its normal place, and I even changed the
> battery on the motherboard to see how it goes -- the problem remained.
>
> Thanks in advance!
>
> --
> Best regards,
>
> James He


Hi James!

I would be doing the following:

0. Making sure I am using the proper procedure to save the settings as I
leave the CMOS setup program.  Some have the ability to exit without saving
permitting the use of the settings one time only.  I would make sure that I
save and exit. I would also look at any CMOS security settings just in case.

1. Reading the MB manual with specific attention concerning how the CMOS is
powered and controlled.  I often find these PDF on the web if they are not
in hand.

2. Measuring the actual CMOS battery voltages - with a volt meter out of
box and with a simulated load if I could figure out with that was (if it
holds with a 1K resistor my guess is that it is fine).  I would also look
into measuring it as it feeds the CMOS on the MB (very carefully of
course!!).

3. Taking some time to clean and look at very closely the battery holder and
associated parts.

4. I would try removing or changing the CMOS jumper you mention and also
take a good look it it's integrity and clean the posts as well and try
another jumper.

5. If all this did not clear the problem, considering another MB.

Good Hunting!

Tod
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