The computer turns on silently with a black screen

Downloaded taschemta DotA 2, flipped off the computer, the next morning you want to download the volcano IPA, but then the horror, the computer just runs silently parts, the screen type in hibernate, everything is already disassembled, on the RAM the computer to spit there or not, percents and bridges are warming up as usual, tried to disconnect each in turn the result is zero, start pure mother + percents same, what other suggestions friends? Capacitors OK battery changed, for the mistakes sorry from your phone to this wonderful website to write unreal