hi people, i bought this acer 5333 and i installed windows 8 preview on it,and one day i was repairing files and it took so long than expected to thought it have forzen ,so i forced it to restart and the moment i tried to switch it on again it start to restart just after displaying the acer log and says press f2 to enter setup and if i press f2 or any key its not responding so it automatically restarts and i have to remove the battery for it to stop restarting.anyone with help on how i can fix this,some have said press alt and f10 ,but non of the keys are working .