During my laptop running, suddenly it displayed black and appear an error message. It tell me- "An error occurred. Restart first & then.......... (Others). I haven’t restart button in my laptop. So I removed my battery and place it again. Then I start my laptop and see that it have no display. After wait sometime I remove battery again and take sometime for cooling it. Then I start again and find nothing displayed. Now what will I do??? Please suggest me.