Tell us about yourself!
I'm not sure. It's possible the keyboard itself of the computers config of the keyboard doesn't translate properly. Either use another keyboard or you might need to use different software like phrase express which can do the same thing but only globally which will effect all the same keys on all keyboards, but it's easily disabled and enabled with Ctrl+Mouseclick.Tough situation.
Try running as Administrator and try running in "compatibility mode for Windows XP" too (google it if you don't know how please). I'm not sure why this could be happening.