Got a problem with this Vaio. Basically the battery is charged up, but when I press 'power' nothing happens. HOWEVER if i put in the AC lead then take it out again while pressing the power button the laptop will boot up fine. Also same thing if I remove and reinsert the battery quickly. The laptop runs fine on AC, I can unplug it at any time once the laptop is on and the laptop will resort to battery. It just won't power up properly!