My acer aspire will not turn on at all. it was working fine last night and then i accidently let it go flat during the day. I plugged the main power in but it would not turn on. The power light at the front lights up but that is all. How can i fix this? the battery works because without it not even that light will work. I seen a couple of tricks on the net to fix this with acers but it does not work with mine. i can not really affort to do a big repair so is there a way i can fix this?