Presario s6500nx stops loading at set up screen

Woke this a.m. to find my screen black no sound from the tower.
I tried ctrl,atl,del and no luck. Held the power button to shut off system.
Waited 3 min. turned it back on and it seems to freeze at the start up screen. then after a few min. screen went black again. This time after I powered it off and back on I help the F10 button for system recovery no luck screen went black again..

Any help is greatly appreciated