Microsoft KB Archive/258172

= System Hesitation When You Access a PC Card Modem =

Article ID: 258172

Article Last Modified on 1/27/2007

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APPLIES TO


 * Microsoft Windows 98 Standard Edition
 * Microsoft Windows 98 Second Edition

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This article was previously published under Q258172



If this article does not describe your hardware-related issue, please see the following Microsoft Web site to view more articles about hardware:

http://support.microsoft.com/default.aspx/w98?sid=460

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you access a PC Card modem by clicking More Info on the Diagnostics tab in the Modems tool in Control Panel, the mouse pointer may stop responding (hang) for up to four seconds. During this period, you cannot perform any other tasks on the computer. After this period, full control of the mouse and computer returns.



WORKAROUND
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To work around this problem, disable Advanced Power Management (APM) for the PC Card modem.

To disable APM for PC Card modems, change the data value of the EnablePowerManagement DWORD value from 01 00 00 00 to 00 00 00 00 in the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\VCOMM

Additional query words: HWSYSAPM HWMODTS HWPCMCIA pcmcia

Keywords: kbhardware kbprb KB258172

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