in message
I can not get my computer to boot-up. I get these errors on my
computer; CMOS memory is wrong, and CMOS memory size is wrong. I
have WinXP Home SP2; what is wrong with my computer?
- Power off.
- Short the 2-pin header on the motherboard to reset the CMOS table (a
copy of the BIOS but with modifications, if any, that you did that are
different than the defaults). Leave shorted for 1 minute.
- Remove the jumper.
- Power up.
Still get the error? If so:
- Power off.
- Replace the CMOS battery (probably a wafer cell, often a CR-2032
model).
- Short the 2-pin CMOS reset header for a minute.
- Remove jumper and power up.
The reset of the CMOS table is because that is where are the settings
that the system uses on bootup (not the ones back in the EEPROM for
the BIOS which only supplies default [sets of] settings). If the CMOS
copy gets corrupted, those settings cannot be read or invalid values
are used. Resetting the table in CMOS forces the BIOS to reload the
CMOS with a new copy of the table. Those will be the default
settings, so if you did any tweaking of those settings then you will
have to tweak them again.