Sometimes the video monitor has its own power switch on the edge somewhere. Look for that, and press it when you find it.

I know it sounds odd, but my monitor on my computer at work turned itself off once. I had no idea there was a separate power switch just for the monitor. Computers are weird.

Omg! It’s on and I’m keeping my fingers crossed. So far so good! Ty Ty Ty!

Yeah, I was gonna say maybe the monitor switch is off but Hawaii has it covered.

Sounds like you have it covered!!!
I’m technologically challenged; please keep in mind when answering.
One suggestion when trying to do ANYTHING with a computer, I find it helps to use the KISS principle…OR…Keep It Simple Stupid. The dumber it sounds & the less likely you feel it will help, TRY IT!!!
My first step is to shut down & start back up. If that doesn’t fix it, I start with the KISS. Whenever my brain thinks “No, that can’t be it” that’s where I start!!!
Double checking cords (unplug & then plug back in) can be very successful as well.

^^ Yup! After turning it off and on a couple of times and letting it ‘rest’ between times, I checked the plugs…well, the ones I could reach (getting on my knees hurts like hell so I avoid it). I never would have thought of my monitor! But the buttons are on the bottom of the screen so I could have easily bumped it/them. My first reaction was panic, thinking the hard drive went out.

@all thanks for responding! and a special thanks to @Hawaii_Jake because his simple solution saved the day!