connecting XPS13 9360 to HP 22yh monitor

@Sharon Marie  Yes, SupportAssist would check for BIOS and driver updates.  In that case this may be like another very similar case I helped someone with a few months ago.  He had a USB-C to HDMI adapter that wasn't working with his system and display, even though the same adapter, cable, and display worked fine with another laptop.  Unfortunately he didn't have another display to test his original system with, but after walking him through some troubleshooting that was feasible for him to perform, I basically said, "It sounds like this will either be a problem with the USB-C output on your system, which would require a motherboard replacement, or else a bizarre interoperability problem that affects the specific combination of your laptop and your particular USB-C to HDMI adapter, even though the adapter works fine with another device.  Since a motherboard replacement would be a major and fairly expensive ordeal, I would consider purchasing a different brand of USB-C to HDMI adapter just to see if that works."  He did the latter, and the second one he bought worked properly with both of his systems.

As irritating as it is, there are all sort of cases in the tech world of things that SHOULD work but don't ACTUALLY work.  If you'd like a recommendation for an alternative product, a friend of mine who has an XPS 13 9360 has this adapter that works fine.  Or if you want to spend a bit on futureproofing, there's this adapter that can support up to 4K 60 Hz with HDR when connected to a system that supports DisplayPort 1.4 over USB-C.  Your current system doesn't, but whatever system you buy next likely will, so if you think you might want to use that system on a 4K HDR TV, it will be ready for that.  In the meantime, then barring any similar bizarre interoperability issues, it will work with your current system just fine up to 4K 60 Hz SDR (i.e. non-HDR).