this has been going on for a while, sometimes, seemingly at random, my computer will start to act as if the alt key is constantly held down, even when i dont touch that key at all, and so far the only fix i,ve found is to restart the computer, at which point it'll work as normal, at least until the problem comes back, which can be once or twice a day, or even not at all. if anyone has ideas or knows a permanent fix to this problem, please let me know