Help Me Diagnose Monitor Blackout

Situation: I have a monitor and TV screen setup off of same PC/video card. All devices plugged into a surge protector. During a storm, both the TV and Monitor went black. No other power outage, PC still on, house lights, etc - only the TV and Monitor go out. I power the TV back on, it works fine, still displaying the same image. Power the monitor back on, nothing, no power light when hitting the power button.

Monitor is an [LG UM95 34UM95C](https://smile.amazon.com/gp/product/B00ZL3D1E8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1).

I want to diagnose whether it's the monitor or the external power supply.

Questions:

1) The external power supply/adapter for the monitor is 19V 5.79A. I have a laptop power supply that is 19.5V 3.3A. I understand the amps are too low. My question is how dangerous would it be to use the 3.3 amp to briefly see if I can get a power light to come on for the monitor - that'd at least let me know I have a power supply issue. Would it do any harm to the monitor to try this only for a moment?

2) Any experience with a situation like this and what might have happened with only the TV/Monitor going out and nothing else? Is this somehow related to my video card as they're both coming off of it?

3) Is the surge protector doing anything to help if this can happen? If this still happens with a surge protector, what's the best way to protect my gear?

I'm just trying to learn more about this while I'm in the middle of it. Any insight would be appreciated. Thanks for the help.