Ifeel 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? ?