Call your manafacture or Microsoft and see if the update took away compatibility for the keyboard in question. If you diff rent keyboards for both computers, check both.
Born a geek. Chose to use Linux and Android. I can void my warranties faster then you,
Please click that "thanks" button if I helped you out, thanks!
Device: Nexus 7(2012) with M-Kernel and Paranoid Android.
Desktop OS: Ubuntu 14.04 with stock Ubuntu Kernel(Linux)
Flash for fun device: Kindle Fire
Phone: Kyocera Rise UNROOTED and Stock