Acer aspire 1640 wont boot up

TRY TAKING YOUR BATTERY OUT FOR 15 MINUTES THEN PUTTING IT BACK IN. IF IT COMES BACK ON, RECALIBRATE YOUR BATTERY BY LETTING THE BATTERY GO DOWN TO 5% THEN PLUG THE POWER CORD IN. YOUR BATTERY MAY NOT BE STRONG ENOUGH TO TURN THE SCREEN ON, EVEN THOUGH YOUR BATTERY METER SHOWS IT HAS A GOOD CHARGE. QUICK CHARGES OR FREQUENTLY UNPLUGGING IT CAUSES THE BATTERY METER TO READ DIFFERENT THAN THE AMOUNT OF CNARGE THE BATTERY IS ACTUALLY HOLDING. RECALIBRATING IT WILL GET THE METER AND THE BATTERY BACK ON THE SAME CYCLE.