Hey guys I had same problem with my laptop while upgrading to windows 10 it stopped working and was beeping 3 times but sometimes it used to beep continously and then I gave it to the repair shop he told me about bad ram and some other minor issues in motherboard.Total repair cost was INR 4250 which included : ram -1300 keyboard-850 repairing charges -2100 . I havent received my laptop yet but update review as soon as i get it