Booting W-7= Video card problem

[soundklinik]

Hi,
started recently, when I boot my PC, the screen shows message: no signal and screen stays dark.
However, in the background W-7 is loading, but in order to get the video functioning, I must restart the PC, turn off the screen, wait till W-7 loads somewhat and (like after 10 sec.) turn the screen on and everything is OK.
Monitor is NEW
Video card too, I tried with a second one, same problem...

My question is, is this W-7, main board, or something else related?
TIA

 

[paulpicks21]

How is the monitor connected to the gpu?

 

[soundklinik]

How is the monitor connected to the gpu?

Thanx for reply,
connected with VGA (CRT) output and there is also DVI output, not used ATM, dont have the adapter
Also I ran for a while the ACCT test...

 

[soundklinik]

OK, let me re-formulate the question:

Is there a chance that W-7 could be corrupted or something is de-activated somewhere that doesn't send the command for video to boot?

The video card and Monitor are both new, all drivers UTD. (Same behaviour with a different video card)

The PC runs great, no other problems except the boot?

Thanks for any tips