DIYbanter - View Single Post - BIOS date and time in a Pentium 4 not adjustable.

Andrew Rossmann

In article ,
says...

A Pentium 4 with Intel system board here.
When powered up the screen displays
GB85010A.86A.0078.P18.0110081719
...
CMOS Battery Low
CMOS Date/Time Not Set

No response to any keys when attempting to adjust date and time. No
problem changing other BIOS parameters. This is only to prevent the
user from adjusting the clock when it can't keep time with power off?
A failure in the BIOS?

Thanks, ... Peter E.

As others mentioned, you probably need to replace the battery first. It
may be blocked due to that. The most common battery is a CR2032,
although you can possibly use a CR2025 or CR2016 in a pinch if you
happen to have one. The only difference is the thickness. 3.2mm, 2.5mm,
1.6mm.

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