Problem With The Main Monitor

A

AdrianLiauw

I am currently using 2 external monitors: 1 with HDMI connection and another one with USB connection. Starting couple months ago, the main monitor won't display anything if I unplug the HDMI-powered monitor. The weirdest thing is that the USB-powered monitor shows the previous outputs from the HDMI-powered monitor and the main monitor. For example, I watched Netflix on the HDMI-powered monitor and I browsed email on the main monitor. After I unplugged the HDMI cable, the main monitor displayed nothing and the USB-powered monitor displayed Netflix site and email.
I am currently using Dell 5758 and the operating system is Windows 10 Home. Do you think I have a hardware issue?

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