This may have occurred after a server dotnet framework update. I have reverted the updates and no luck. The keyboard is online on bootup ( as in I can access BIOS) but will not respond when I get to the login screen. I am able to access
the server via RDC, Radmin and Logmein to do trouble shooting. Kbd and mouse fully functional in remote. Checked, deleted, update drivers. Tried different hardware and no success. No luck in Safemode as well.