This article was previously published under Q259884
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When you install Windows 2000, certain uninterruptible power supplies (UPSs) that are in Smart Signaling mode may go into Battery Calibration mode. This behavior may cause the battery to drain.
This problem can occur when Window 2000 tries to detect a serial mouse during setup. When this occurs, Windows sends a "D" to the serial port, which causes some UPSs to go into Battery Calibration mode.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English-language version of this fix should have the following file attributes or later:
Date Time Size File name ----------------------------------------- 06/21/2000 09:40p 229,264 Setupldr.bin
To work around this problem, disconnect the UPS before you run Setup from a CD-ROM installation. If you are deploying Windows by using an unattended installation, replace the Seupldr.bin file in the I386 folder with the Setupldr.bin file that is provided in this hotfix.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 2.