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The same issue occurs when I plug it into another computer. If I plug it in when only the keyboard is connected, the keyboard doesn't work. I did not install any new software or hardware before the issue occurred.

All my USB devices abruptly stopped working today. I was able to determine through trial and error that my TrackIR 5 is responsible. When it's plugged in, everything immediately stops working, and when it's removed everything goes back to normal. This occurs regardless of whether it's plugged into t...