I've been using the HP Pavilion dm4 running Windows 7 for about a year now, and for the most part it's been very effective for me. However, recently I've been having some trouble making the computer fall asleep and hibernate properly. When I attempt to sleep or hibernate the computer, the display turns of immediately but the computer never falls asleep - the fan continues running, and the buttons with lights remain lit and can be toggled on and off. In addition, because the laptop is running, the battery drains out completely, shutting doen the laptop abruptly. The only way I've been able to get out of this situation is forced shut down, which puts me back at the first step. If anyone has any tips, they'd be greatly appreciated!