Code 39 : Keyboard Driver missing

When my PC starts,it seems my keyboard is not working . But In BIOS i am able to do everything but after log-on,my keyboard was not working. I checked my device manager and found some error with my keyboard. I found out this Code 39 error from this event.

To repair this error:

1)Run regedit .Click on Edit -> Find kbdclass
2) Find the path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
3) There may contain multiple driver associations such as 'tphclhs kbdclass' , usually comes if you have installed a virtual machine previously.
4) Double click the 'Upperfilter' and delete the other entry except 'kbdclass'
5) click OK. It may show some message. never mind.
6) Go to device manager and uninstall your keyboard - then 'scan for hardware changes'
7) restart it.

Thats it.!

http://jaacostan.com/