DX4860 black screen

Gateway DX4860 UB33P, Intel 2320,i5 , 6 months old , Always leave on 24/7, unit set to go to sleep if not used for 30 minutes. wake it up every morning except for yesterday . screen stays black.
Only used lightly for banking and book keeping - No games/downloads/porn etc... all items set to auto update IE windows firefox etc...
1)use power button to shut down. unplug everything less monitor ,keyboard,mouse & reboot. The computer lights are on/the dvd drive functions with the button/ the CPU and power supply fans function/ the harddrive spinning up / The keyboard lights flash once & then no num lock action <> screen stays black.
2) reboot again - no splash screen or bios/cmos when pressing F-anything or delete.
3) change the monitor connection from HDMI to vga screen stays black, try alternate monitor screen is black
4) put in recovery disk <> try reboot screen stays black

Does this sound like onboard video?