Just had a problem with Windows xp - it kept opening a new window on each click in Explorer, text was randomly highlighted, Word was playing up earlier, keyboard started to only type in Caps. Ran Spyware but only the usual Trojan buzus showed up. Then pc got into a loop when I rebooted saying it had a problem and needed to close. Have finally got it up and running ok , if slow, after 3rd attempt. Any ideas as to why this might happen ?