As stated the DVI standard doesn't carry the audio signal. Only possible solution is to use 2 cables. One for video and the other for audio. However, if the DVI port supports HDCP, audio out of the port could be possible with some configuration. Seems like it could be limited to onboard...
You can only charge the controller via usb on a windows pc with a play and charge kit. It will not work as a controller in windows without a usb rf receiver. If you have an old 360 console that no longer works you can remove the RF module and solder a usb cable to the contacts and have it work...
Have you checked windows event viewer after the issue happens to see if you can get any clues? Any warnings or errors popping up after these hangs happen? Open computer management, event viewer, windows logs and check under application and system.
Could be system file corruption or something along those lines. Maybe just try running an sfc /scannow and see if it finds any issues as well. Won't hurt anything to give that a shot either.
Sounds like it could be a drive issue. Can you run crystal disk info on your system drive and see what it's health status is. Might give you a clue as to weather or not it is starting to fail.
Built myself a decent 4k gaming rig to play on my new 55" LG oled. The 4060ti in the first picture was just temporary until the 4080 super arrived. Got a decent setup now.
Is the LCD wired to a modchip or is it just a temperature prob lodged between the fins of the heatsink? Depending on how and where it is reading temperatures from can cause them to vary.
Your only option may be to clone the hdd to the ssd. Unfortunately this will result in loosing half the storage space on the ssd at least until you can get the blu-ray drive fixed and then you'll be able to reinstall the firmware properly and format the drive to the full size while doing so.
You can double check from the instructions here:
https://www.lg.com/us/support/help-library/lg-tv-screen-the-screen-intermittently-dims-out-and-brightens-up-CT10000018-20153258984909
It's probably enabled by default and if you didn't turn it off it's likely the cause.
Unless it's an OLED then...
When following a guide you should stick to the outlined steps unless you're prepared to end up in a place where you typically don't want to be. They even explain later in the guide why you need to format. When you completed the initial setup and set up a mii, you no longer have a clean...
I've owned both iPhone and Androids over the years. Both are just as good, other than Apples higher price. I'm currently on Android, Samsung S21 I think, and very happy with it.