XPS M1530 - Tastatur+Maus reagiert nicht mehr

Hi

Figured out how to fix this error if anyone is interested.

It is a bad Upperfilter setting in the registry.

To repair this error:

1) go to C:\Windows\System32\Regedit32.exe

2) Click on Edit -> Find

3) Type in kbdclass (be inventive here as I know you cant type. Copy this name from c:\windows\system32\drivers\kbdclass.sys - right click and click rename. Then just copy the 'kbdclass' - this can then be pasted in the regedit box)

4) Search through for as many Upperfilters you can find.

5) They most likely have 2 lots of drivers associated with it eg 'tphclhs kbdclass'

6) Double click the 'Upperfilter' and delete the other entry except 'kbdclass'

7) Search for all instances of this and change them

Go to device manager and uninstall your keyboard - then 'scan for hardware changes'

9) You will most likely need to restart

Keyboard should now be working fine.

I actually surprised myself in solving the error - as you normally delete the upper and lower filters for CD-Roms when they have the error code 39 - so I guess it would work for all devices that have upperfilters.

Worked for me so hope it works for you too.

Best of luck

Bas

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