Hi there! I have an HP pavilian 501n with an XP OS that went into a sleep mode and never came out! Now, it goes on with a . ... .... ... beep pattern. I've turned it off as well as holding the off/on button which turns it off and on again with no success. Any other suggestions or ideas as to why this happened to begin with. It's a relatively new system - 17 months old. Any help would be appreciated. I'm a graduate student who definately needs this computer to function! Thanks. Maureen Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com