Display settings show too many monitors detected

I have a Windows 10 Dell laptop with three monitors plugged in to a Dell Display Link box (two HDMI and one DisplayPort). Everything worked well for several months, but now my Windows display settings show me eight monitors available (there should only be four including the laptop screen).

I had this problem before but rebooting used to be a quick fix. Now, even a reboot doesn't fix the problem. I updated my Display Link drivers from version 7.9 to 8.0, but the problem remains.

Any ideas of what to look for?

Solution 1:

I have a Dell XPS 15 with HD Graphics 4600. Install the latest driver of the Dell site (this is older than the version of Intel) resolved the issue for me.