I'm having the same problem. It's weird because I've used this keyboard before (on a different motherboard though). So here is where things start getting strange. This is a USB keyboard that I have the problem on (and I have the problem on every USB port). Now if I unplug the keyboard and put in a different keyboard with the other connection type, it works just fine. If I start the test play with that keyboard in, and then plug in my usb keyboard, THE USB KEYBOARD WORKS!. But then if I quit the test play and try it again, it screws up like it used to. This is some weird ****.