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CMOS Battery???

By johnv ·
I have a P-233 PC that keeps losing track of the time and date after it has been shut down. Thinking the CMOS battery was dying, I replaced it twice (with the same type of battery)and I am still having the problem. What's my next step?

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CMOS Battery???

by brian In reply to CMOS Battery???

Replace the Real-Time clock chip. This contains the realtime clock as well as the CMOS RAM that settings are stored in.

Brian

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CMOS Battery???

by johnv In reply to CMOS Battery???

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CMOS Battery???

by dheupel In reply to CMOS Battery???

Check the jumper shunt on the motherboard that resets the CMOS back to defaults, it could be shunted incorrectly. Also, lightly press on the BIOS IC, and Real Time Clock (RTC) IC to re-establish a good connection. Due to heating & cooling of the motherboard during normal use, a connection of one or more IC pins-to-socket could be loose, causing your headache.

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CMOS Battery???

by johnv In reply to CMOS Battery???

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CMOS Battery???

by MrSid In reply to CMOS Battery???

Microsoft cites Advanced
Power Management (APM) as one possible cause of this problem. You could disable APM to check out the difference. Other possible causes are recorded as third-party antivirus
programs, screen savers, system utilities (programs that depend on
timing), and, of course, a weak CMOS battery.

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CMOS Battery???

by johnv In reply to CMOS Battery???

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CMOS Battery???

by epoe In reply to CMOS Battery???

When did this problem begin? Does it immediately lose time when it has been shut down or does it take a few hours for the time loss to be noticed? Have you installed any new hardware recently?

Turn off power management in the BIOS. If that doesn't fix your problem, I would suggest that you remove all peripheral cards and RAM from the motherboard after you shut down for the night. In the morning, insert all the cards and RAM back into the computer and turn it on.

Is there still time loss? If not, you have some cards and RAM to experiment with. If so, you can look towards other components or implementing a time sychronization with a server at logon or over the Internet.

For what it's worth, when I've experienced these problems, the culprit has been the NIC or the modem.

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CMOS Battery???

by johnv In reply to CMOS Battery???

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CMOS Battery???

by sweichenthal In reply to CMOS Battery???

Norton 2000 will also cause this problem.

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CMOS Battery???

by johnv In reply to CMOS Battery???

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