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 monitors ...
Get your display working again. This guide shows you how to fix the 5 most common HDMI input problems, from simple resets to more advanced solutions.
I have a brand new LG 50PK950 plasma TV, a six month old Marantz NR1501 receiver, and a couple of computers with HDMI: one desktop with integrated Intel graphics, and a laptop with discrete NVidia.