Bad news. Got a call from a service center and they said my motherboard has to be replaced.
But the guy who called me couldnt give any more detail about what the problem was, when i asked him what in particular caused a failure he responded with " I can't tell you what is the actual problem, but you will have to replace your motherboard, which will cost 400LTL (~$200) ", and when i asked him if they checked the battery he said "I can't tell, but the problem is your motherboard". So the lack of details, and going back to motherboard failure seems fishy to me, but oh well... I would try to replace the battery, but in my country it is not that cheap (~$50), so the only option for me is to try and sell it, for whatever price i get