relevant

I've been using Action Launcher since I bought the phone without any issue.

After installing the update yesterday I can set Action Launcher as default, but it doesn't stick and doesn't open Action Launcher when I change it in settings.

I've also tried Microsoft Launcher - same issue.

Video of changing launcher: https://gfycat.com/grandgrossdrever

Any ideas?

UPDATE

Factory resetting the phone worked and I'm now able to use any launcher again.

###Build Help:

So my 'HTPC' i7-2600K build is starting to reach it's end of life.

The main problem is that the motherboard is starting to fail, with only two SATA ports working and only one USB controller still alive. So instead of finding a replacement mATX board, I've decided it's time to buy new hardware.

I will reuse the the graphics card, psu (650W) and SSD from the old build.

Since it's been five years since I was up to date on hardware I'm looking for feedback on the build and any potential pitfalls.

What is your intended use for this build? The more details the better.

PC for use in the living room, hooked up to the TV. Mainly streaming and gaming with xbox one controller