I have on loan a Toshiba laptop Satellite Pro 420CDT. My problem is that it has gone into hibernation mode and I cant seem to bring it out or restart it. When I press the button on the side it brings up a frozen picture of the screen saver but I can't get any further. I can't even find a way to reboot it either to start again except to maybe disconnect from the power and then remove the battery ..... is this method OK or is there a better way around this problem?