I'm experiencing the weirdest problem that suddenly cropped up. Capital 'H' has been re-assigned such that it switches to Windows Explorer if an instance of Windows Explorer is open. I'll be typing in Word for example and suddenly I switch to Windows Explorer but it happens whiule using any application. It is most annoying to have to remember always whether I have an instance of Windows Explorer open. Where would I look to see if a keyboard letter has been re-assigned by some malicious app for example. I looked in the Control Panel but I don't see where individual key assignments can be made. Thanks.