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HDMI input no longer works HP Envy AIO Desktop
The computer is HP Envy 23K-011. There is a button at bottom of the computer that switches the display from computer to HDMI . Now this button does not work , the display remains showing computer as source. I last used it 2 years ago. Since then I have updated the OS to to Windows 10 home ver 1809 . But I never checked the HDMI display input after each update. I have updated all the display drivers to no effect.
I have tried the following : Power cycled the computer , reinstalled HP my display ( hdmi input does not work with or without HP my display)
Not sure what to try next. Any suggestions? Tks