Acer Aspire 5520 won't turn on

[kermet]

Hey forumers. I am looking for ideas/suggestions or what have ya. My spare laptop, Acer Aspire 5520 was good last night... Now wont turn on!!. Battery is good, Charger is good. All that happens is the power LED turns on 3 sec, off 1 and on for 3 more, then blinks forever... Any techies run into this problem? and if any play WoW that help me, i can tip ya well THX

 

[Tmagic650]

Remove the battery and the AC adapter. Press and hold the power button down for around a minute then release the button, and apply the AC adapter and see if the laptop will boot normally