Windows Clock on Taskbar and in Date/Time Tool Loses Time
Found this neat little Microsoft article on some of the reasons, #189706
NOTE: If either of the symptoms listed in this article
occur, the Windows clock on the taskbar and in the Date/Time tool in Control
Panel may experience a loss of time.
NOTE: To more effectively search the Microsoft Knowledge Base, use keywords that relate to your issue. If you are searching for troubleshooting information that is not mentioned in this article, search the Microsoft Knowledge Base again by using keywords that are listed in the following Microsoft Knowledge Base article:
This last symptom listed in this article can occur for either of the following reasons:
To resolve the issue for the last symptom listed in this article, use one of the following methods:
Disable APM in the BIOS and configure Windows to manage APM. For
information about how to disable APM in the BIOS, please contact the
manufacturer of your computer.
To configure Windows to manage APM:
Disable the following types of programs and utilities:
Configure your computer to start with a clean boot. For additional
information about configuring a clean boot, click the article numbers below to
view the articles in the Microsoft Knowledge Base:
243039 How to Perform a Clean Boot in Windows 95
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
If your computer loses time, use the Date/Time tool to set the correct time:
To determine if the time loss is a result of a weak computer battery:
If the computer's time and the time on the clock are different, the
computer's battery may be too weak to keep accurate time, and it should be
replaced. For information about how to replace the battery, refer to the
documentation included with your computer.
NOTE: This problem does not affect the clock in your computer's CMOS.