I have no idea what is causing this truly bizarre problem. Whenever I connect or disconnect my power cable for my brand-new laptop, the screen briefly turns off (2-4 seconds). Its really annoying and I would like to know what is causing it, or how to fix it... if it is fixable at all. I haven't seen any other reports of this problem across any forums I know, yet it seems the display model at Best Buy has the same issue mine does, so this is a right-out-of-the-box problem and not something I did when setting up. It doesn't seem like a screen malfunction (no tearing or distortion or flickering), it looks more like the way the screen turns off briefly when I disable one of my GPUs or change the screen resolution or whatever. My best guess might be that it is using the built-in Intel GPU when on battery and the GTX 1060 when plugged in, and the blackscreen is a result of switching between them, but I'm not sure how I might test that theory. I upgraded from an ASUS ROG GL551JW from 2015, which didn't have this quirk.
I did contact an ASUS technician over the online chat, and he confirmed that this is NOT intended behavior, but he was unable to help. His only suggestion was to update the BIOS, but I'm actually running a newer version than on the official ASUS webpage (which is odd because I don't believe I downloaded a BIOS update, so it was a newer version than on the website right out of the box, but newer is better, right?). I've been going crazy updating every single driver for every single component on my machine, from the keyboard and wifi to the graphics card. I've tried to update each driver through the Device Manager, as well as getting the newest drivers directly from Nvidia/Intel/ASUS websites. AFAIK I'm 100% up to date with the newest versions of everything (except the wireless card, which Intel says has a newer version but whenever I try to install it is just says 'this software package cannot be installed on your system'. While this is annoying I doubt its the source of the problem.)
Any help or ideas would be greatly appreciated, as well as any reports from anyone else who has this issue, just so I know I'm not going insane here.
Hardware: ASUS ROG GU501GM with no customization, includes Nvidia GTX 1060 card and Intel i7-8750H with UHD 630 graphics
Software: Windows 10, newest version
Video: https://www.youtube.com/watch?v=IFs4fVmQ9LI

I'm running Windows 10 64-bit on my ASUS N61JQ laptop. Immediately upon unplugging the power cord, the screen on the laptop turns off. Battery is at 100% charge. With a second monitor attached, the second monitor is unaffected and stays on. Power plan settings say: On battery power, turn off after 10 minutes. I've tried setting this to Never, but it makes no difference. When I say the screen 'turns off,' I don't mean that it's a blank screen with some backlight. I mean the screen looks the same as if I totally shut down the system and turn everything off.
Also, ever since upgrading to Windows 10, I can no longer change the brightness on the display. Sliding the brightness bar down from 100% changes nothing, until it gets to around 60%, at which point the laptop display turns off completely, just like it does when I unplug the power cord. Putting the power cord back in or sliding the brightness bar back above ~60%, as the case may be, causes the display to immediately turn back on.
Neither of these things was ever an issue for my laptop with Windows 7 installed. The video card is an ATI Radeon HD 5730. Until this evening, I had the most recent video drivers installed. Through Control Panel, I went to the properties of the video card and told Windows to look for new drivers. It found them automatically and installed them. No change to black screen problem.
Any ideas or possible solutions would be greatly appreciated