I recently bought a new desktop computer that runs windows 7 and at first I could connect both my mouse and my keyboard but now I can only connect my mouse, considering I'm still doing OS installation I cant do anything at starup with my mouse, so right now I cant do anything on the actual computer. The problem originated after I rebooted the computer but now the keyboard doesn't work on ANYTHING. This is the same problem with all keyboards Ive tried, so i font know what to do.