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 ...

Some users experienced this problem and reported that the second monitor displays nothing except the No signal message after sleep.

Raspberry Pi monitor No display after boot 1] Make sure that you are using the correct PSU The newly released Raspberry Pi 5 requires a 27W USB-C power supply to function properly.

When I rebooted I received a no signal icon from my monitor. I did RMA thru sapphire, and received a different card (like you I compared serial numbers), so far I have experienced no problems.