I would try another HDMI lead, inspect sockets and plugs, especially in view of the intermittent nature.
The specs tell you whether there is switchable graphics. I can't find that specific model, you tell us.
The Device Manager will show two under Display adapters if it has two.
However that is not relevant.
In Control Panel > Devices and Printers, will show external monitor.
The switch is for an external monitor, not specifically HDMI.
Windows 10: How do I enable hdmi on HP Notebook
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New 14 Apr 2017 #11
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