black screen no bios showing

[westside89]

Hello,I need some help about my Acer 8920g,Yesterday was working untill I was playing a game and at once its stucked than I push power botton to switch it off immediately after that I tried to switch it on but its appears only black screen.... If someone knows something about that if can help me

 

[ffg7]

disconnect main power from laptop, remove main battery from laptop, press power button & count to 10. re-insert main battery & press power button to see if it will power up properly.