IT noob 0 Newbie Poster

My laptop is Acer branded and i think i just bought it half year n its like a dead machine lmao..
ok.. the problem is.. i inserted my adapter plug into the socket... got green light...i press the power start button...got green light... *crow flies over* few mins later.... nothing happen...screen remain as black... turn off main switch...on...same result..off n on ... off n on... FINNALY! got screen...and...why the hell my laptop dodo become like this lmao