P2219H, no HDMI signal from two PC

Question

I turned on my Lenovo Y720 but the display showed 'no HDMI signal from your device'. I tried another HDMI cable, didn't work. I tried connecting to MacBook, same problem. I found a 'solution in Dell forum' which said to disconnect all the cables, hold the power button 10 seconds, then doing the built-in diagnostics and connecting to laptop. Didn't work either.It worked well in past 7 days, before that I had a problem, it showed only black screen. I fixed it with the same steps, but looks like it is not working now. Also when I am writing about this the P2219H turned on with extended screen 2-3 times, but lasted for less than 1 second. What should I do?

DELL-Chris M · Accepted Answer

Sounds faulty to me. The 3 year warranty has expired. You will simply have to replace it.

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