|My friend's keyboard is apparently disabled when he logs in under his own user name. There is no response to any keystroke. There is a split-second window where we can hit C-A-D or the Windows key if we're quick enough right when the desktop appears but the keyboard is non-responsive from that point on.|
If he logs in as Administrator, Guest or as a new user we created while troubleshooting, the keyboard is fully functional. The on-screen keyboard works for all user accounts - even his.
It seems that some setting has gone amiss specifically for his user account that System Restore can't correct and device manager doesn't make available. Thanks in advance for any ideas you may have.