Q. You receive on STOP 0x0000007E BSOD on Windows XP when your keyboard class driver is configured in grandmaster mode?

Jerold Schulman

October 19, 2006

1 Min Read
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If your Windows XP laptop has the Kbdclass driver configured in grand master mode, as in SMS 2003 clients, you may receive an error similar to:

Stop 0x0000007E (parameter1, parameter2, parameter3, parameter4)
SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

To disable grand master mode for the Kbdclass driver:

1. Open a CMD.EXE window.

2. Type the following command and press Enter.

REG ADD HKLMSYSTEMCurrentControlSetServicesKbdclassParameters /V ConnectMultiplePorts /T REG_DWORD /F /D 0

Instead to this workaround, you can call Microsoft and request the 926238 hotfix.


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