Sunday 10 June 2012

i8042prdisabled 

I have had the same issue and I was able to resolve it.By default the startup type for i8042prt.sys at boot time is set to enabled.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt > The REG_DWORD entry "START" is set to "1" which means enabled.

The driver is not installed by default and it is stored some directories.In example :
C:\Windows\winsxs\amd64_keyboard.inf_31bf3856ad364e35_6.0.6000.16609_none_f18fcd509427b0d2\i8042prt.sys

The driver can only be loaded if it is under stored under system32\DRIVERS\i8042prt.sys.

If you never plug-in a PS/2 keyboard to your PC it is never copied to the system32\DRIVERS folder and you will see everytime this event if you start your PC.

The solution is either you should plug-in a PS/2 keyboard one time or you should change the value of the "START" registry entry to "0" which means "disable" at startup or "do not try to load"

Thats it !

1Windows Registry Editor Version 5.00
2
3[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt]
4"Start"=dword:00000004





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