If there is No Signal on monitor on a new PC, but the CPU is running, you need to take the following steps to resolve the issue.

My Acer x263w displays "No Signal" right in the middle of the screen, unmoving too, when my Win 7 x64 PC is asleep. It is connected to an ATI 5450 chipset video card via HDMI. I have 2 other ...

The monitor also came with a VGA-to-DVI cable, so as a test I've also tried keeping the old VGA adapter on the PC & using that cable to connect the monitor - still no signal detected (I've been ...

If Windows cannot detect the second monitor after waking up from Sleep mode, then here some working solutions to help you fix the issue.