Microsoft KB Archive/911133

= You receive a &quot;0x0000007F&quot; Stop error message when you touch the screen with a stylus pen on a Windows XP Tablet PC Edition 2005-based computer =

Article ID: 911133

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Tablet PC Edition 2005

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SYMPTOMS
When you touch the screen with a stylus pen on a Microsoft Windows XP Tablet PC Edition 2005-based computer, you receive a Stop error message that is similar to the following:

STOP 0x0000007F

UNEXPECTED_KERNEL_MODE_TRAP

Note The  values may vary.



CAUSE
This problem occurs in the following scenario:
 * 1) The in-box Wacompen.sys digitizer driver is installed on the computer.
 * 2) An external monitor is connected to the computer.
 * 3) You start the computer when the lid is closed.
 * 4) You open the lid after you start the computer.
 * 5) You touch the screen with a stylus pen.



RESOLUTION
To resolve this problem, install the hotfix that is described in the &quot;Resolution&quot; section, and then restart the computer when the lid is open. If you restart the computer when the lid is closed after you install this hotfix, the digitizer and the stylus pen may not work at all until you restart the computer at least one time when the lid is open.

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: LCD dock undock docking station IBM 0x7F BugCheck F

Keywords: kbexpertisebeginner kbqfe kbhotfixserver KB911133

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