Date won't change in XP after replacing cmos battery

  • Thread starter Thread starter Mark Smith
  • Start date Start date
M

Mark Smith

I took my cmos battery out to see what kind it was.
When I put it back in, everything stayed the same except the date. Now the
date will not change automatically from day to day. I have to change it
manually. Anyone know how to fix this?

I don't think it is an XP issue. Anyone had similar problems using an Asus
MOBO?
 
I would try clearing CMOS, then resetting all information and settings.
See if that fixes it
 
"Mark Smith" said:
I took my cmos battery out to see what kind it was.
When I put it back in, everything stayed the same except the date. Now the
date will not change automatically from day to day. I have to change it
manually. Anyone know how to fix this?

I don't think it is an XP issue. Anyone had similar problems using an Asus
MOBO?
Click to expand...

How does the clock behave in the BIOS ?

If I pull a battery on one of my boards, chances are the date
will show "1970" as the year. That is one sign that it reset
properly.

If you wish to experiment, either wait until close to midnight,
or set the time in the BIOS as an experiment, to a time close to
midnight, and watch what happens when it hits midnight, while still
in the BIOS screen. Does the day advance then ?

Remember, that when Windows is running, the time is maintained
in software, without looking further at the hardware RTC. Time
is maintained by using the processor clock, as accessing the RTC
all the time, to get date information, would be way too slow to
be practical or advisable.

Windows time can also be influenced by NTP protocol, if you are
using a network clock source to synchronize your OS clock. A
bad NTP server might mess things up.

Paul
 
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