20" iMac G4 suddenly won't create an uppercase "t"
WtF? My machine has been working fine for years, and tonight, I start getting warning noises when I hit "shift-t" for an uppercase "t". Shift works with every other letter, and I have already tried restarting and swapping keyboards. I also notice that I can get an uppercase "T" using caps lock, but not with the shift key. What the hell??????
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Does this happen in a fresh user account?
I'm not sure, since I'm the only user the machine has ever had. How can I check this (sorry for being such a tech newb!)?