System is running but all I have is a black screen

[ovrnitemale]

Power is on to the cpu, fans are running and all lights are on. Screen is in sleep mode and nothing on the screen. I turn off the system and then turn it back on and the same thing happens. Not booting up, no beeps, nothing on the screen. Before shutting down lastnight I had some updates for windows. Set computer to shutdown after updates were installed. Turned computer on today and nothing is showing on screen, monitor is in sleep mode and computer is not doing anything. Any on have any suggestions?

 

[Hellfire13]

if there is no beep that mean there is no post...which is usually a hrdware problem...
open d cabinet...detach all peripheral(usb/pcie/etc) devices...
if u have multiple rams, detach all except one and then try to boot ur sytem...

u shd have only d motherboard, processor, windows installed hdd and one ram running when testing for post...