PC give display for few seconds then hangs/no display

Hello everyone,
I have P5KPL-CM and E5200, had my PC running fine yesterday morning.
had proper shutdown etc etc.
however last night after I turned my PC , it was on for few seconds then their was no display. Now it gives POST but after that display goes away, Ctrl+Alt+Del doesn’t work, pressing reset button doesn’t restart it. only thing i can do is turn off and on , and the problem repeats. i removed the RAM and it gave beeps for few seconds then silence.
what has gone wrong? i tested it on diff. PSU but had same problem.
P.S. i removed my video card and ran on built-in one but still same problem
Answer #1
Maybe hardrive m8? can u see it in bios?