Dell S2718H/HX Infinity Monitor Becomes Scrambled

Thanks for the reply Fireberd. When I checked the Graphics card driver it tells me it;s up to date. The Intel driver assistant also says that all drivers are up to date. Windows update says that the OS is up to date.

I went to the Acer support page and it lists 13 drivers for my machine, including 3 VGA drivers. It does not say if any of them need updating. Can you suggest whether I sould install the VGA drivers?

Not to throw the blame game, but I would suspect something in the PC rather than the monitor as it worked good until a Windows 10 software upgrade.  Recycling the power on the monitor causes the PC to regenerate the HDMI signal and thus most likely why it seems to fix it.  

First suggestion is to go to Intel and run their updater and update the CPU Video drivers.  

I'm using the Intel CPU graphics now on my current desktop but I was concerned as I've had a problem in the past (motherboard problem) with the CPU graphics and had to use a separate video card.

If you have the Intel HD Graphics as originally noted, you don't want or need any of the VGA drivers.  VGA is a different connection type.  

The fall creators upgrade has caused varied problems with many.  I also do support on the win10 forum  www.tenforums.com  and although not your specific problem I do see lots of other problems.

Here is the Dell driver for that monitor.  Reinstall it and see how things work out.  The original driver installation could have been corrupted by the upgrade.

www.dell.com/.../DriversDetails

Thanks very much again! Should I just download and install it or do I need to unistall the previous version. If so, could you walk me through it.

Merry Christmas!

I'm not sure what will happen if you uninstall the existing driver and then restart the PC before installing.  Normally, Windows will just install its own generic driver but no guarantees.   But, I wouldn't be afraid to try it.  If you don't want to, Just download and install it.  If you get a message asking if you want to install over existing (or some similar message) just click yes and continue with the install.

Much appreciated. I've downloaded and installed the driver. I go no messages of any kind, so i assume it's installed OK. I've also sent for a top of the line HDMI cable just in case that's the issue.

It wasn't expensive ($7 plus shipping), so I thought it best to get it. Of course, as you say, if the problem is not my cable, then I wasted my money.

Since the driver install, the screen has stayed on for 4 hours and counting. Hopefully I won't be back in an hour, to say "I spoke too soon!"

A "high grade" HDMI cable shouldn't make any difference (assuming the cable you have is OK).   Its a digital signal.  Same way "high grade" (priced) USB cables make no difference.

Sounds promising. I hope this did fix it.