Windows 10: No HDMI signal?

This is a brand new Dell XPS 3890 dekstop; just got it last Tuesday (Windows 10 Home). I got notification from Dell that I had a BIOS update, so I clicked to install it. Ever since I installed it, whenever I put my computer to sleep, start or restart I get these messages on my black screen:
Scanning for signal ...
No HDMI signal found on your device.

I also just got a new Dell monitor last Friday.

Everything appears to be working fine, but there is obviously some kind of problem.

Can anyone give me any advice about this?

:)

 

no HDMI signal


I have an ASUS monitor and ASUS desktop with a graphics card not on board graphics. I have an HDMI cable from the monitor to the video card. Today for the first time while on the internet my screen froze and then went blue saying no HDMI signal. I tried everything but still no signal. I then tried my VGA cable and all was working. I then tried my HDMI cable again and it worked until this afternoon when I was watching a video on the internet and the screen froze and said no HDMI signal. also when this happened I could hear my fan running loudly. Any suggestions on what the problem could be?

 

display port to hdmi no signal

Do you have the latest drivers installed for the graphics card?

If new drivers or reloading graphics card drivers doesn't fix it, the next thing I would suggest is to try the display port to HDMI adapter a couple of us have suggested already with a regular HDMI cable. If your cable is bad or you just need an adapter because for some reason a straight cable won't work - spending $20 on the adapter is a lot cheaper than new graphics card. I just installed my GTX 970 card a week ago and I had plenty of HDMI cables so that is why I went with the adapter instead of buying a new display port to hdmi cable.

 

Why exactly is ATi considered be better at HDMI?

I plug my HDMI cable into the card, then into my TV. Those are the steps that I have to do. All the steps you list make absolutely no sense to me.