Microsoft Natural Multimedia keyboard 1.0A problem

I recently purchased a new pc running vista and connected my multimedia
keyboard using the ps2 connector this seemed to work but when I logged off
and restarted the next day the boot screen said that there was a keyboard
fault or none connected I downloaded and installed the latest drivers for
this keyboard and it seemed to work fine but again when I startup the same
thing happens no response from the keyboard anyone had the same problem ?

 

Im having trouble with my 'microsoft digital media keyboard 1.0a' not
allowing my vista OS pc from sleeping. The fault reporting tells me
continusouly its happening and I have updated drivers and checked with device
manager and as far as its concerned its working properly. Its the only thing
I havent been able to resolve but still a little frustrating. I brought all
hardware for this pc at the same time so it isnt an issue of generations???
Hopefully a patch will come about soon. Good luck