bahi jan mein computer bilkul theek band karta hoon. par 3 din say yeh masla aa raha hai jb be power on karta hoon to system direct on ho jata hai. press F4 lekha hota hai os ko press karta hoon to exit kar kar dayta hoon. pher system chalne lag jata hai. her bar yehe masla aa raha hai plz is ka hal batao.