Reset on Startup

[#1]

Running an old Pentium III with XP.
Everytime we start up I have to go through Run SETUP before getting to windows. After running setup, everything is fine apart from the pain of having to reset date / time.
Any suggestions?

[#2]

The message I get is 'CMOS' settings are wrong. F1 to run SETUP F" to load default values and contine.
I can go either way to fix. Usually F2. Once this is done, windows opens OK and everything runs fine. Power down PC. Switch back on. Same message again.

[#3]

Excellent. No problem with working inside. I will find the little fella and get it replaced. Thank you 

[#4]

Some old MB also have rechargeable batteries so leaving the pc on for a couple of days may solve it. A lot of old MB that had a none replaceable battery ie it was soldered to the board have pins close to the battery and you used to be able to get a little plugin box which you could put AA batteries.
If it is a soldered in one you can solder wires onto the battery and stick 6 volt on it from any dc source

[#5]

Quote from: samuria

If it is a soldered in one you can solder wires onto the battery and stick 6 volt on it from any dc source

Careful - 6 volts may be to much, some require 3v or 3.6v.  Also, check polarity (+ and -).

Richard