I feel like I might've clicked some button or button combination, because whenever I tried to type on my desktop keyboard, it typed 7's and other random letters and numbers after every two words or so. Stupidly, I shut the computer down, thinking it was a minor error, and could be fixed. I logged back on, but I guess the problem wasn't fixed, because now I cannot get into the personal computer, and I'm guessing it is adding all kinds of random numbers and letters to my login password. How do I fix this?? Thanks!!