Use System Restore to then.
Never worked? Hunt down the procedure on how to install XP proper on your laptop. It's never been harder as we read a reply from HP at http://forums.cnet.com/5208-7587_102-0.html?forumID=69&threadID=271360&messageID=2699006#2699006
Parting thought. Uncheck the require password at resume checkbox.
Everytime my laptop goes on standby mode the monitor shuts off and after moving the mouse and tapping on keys, it doesn't turn back on. The light on the power button is on, but the only thing that I can do is hold the power button down and restart.