Solved! Black screen, won't turn off

Jun 20, 2018
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HP Probook, Win7. Got a black screen, which has happened a few times lately but can't fix this time. Holding power button will not turn off power. Unplug then plug in and it's still on. Fan running, caps light blinking, no battery. Please help!

I left out some potentially relevant info. I have a bad habit of picking it up by the monitor instead of the base. When I did that is when the screen went black. So perhaps the connection was just disrupted. Please advise how to check / fix. Don't know why it won't shut down/ restart but perhaps seeing the screen would help.

Also, before this happened, it was wanting to do updates, which I postponed, as every time it updates, something goes wrong and I have to spend time finding a fix and I didn't feel like dealing with it right now. Not sure if this is relevant to current issue.