Aurora R4, multiple issues below

Hi. So, I have a few issues to cover, and to keep from having to make more than one topic, I'm going to put it all in here. Here you go; read it and weep:

Issue 1: When I turn off my PC at night, it turns off Windows 10, then peripherals, then, after a small amount of time, the PC itself. But on occasion, everything BUT the PC goes off. The lights on the PC stay lit, the power button is still glowing, and the disk usage light marks constant disk usage. If I hold down the power button, it eventually goes off, but it's still weird.

Issue 2: So, I recently started a new save in the game Fallout 4, and, on occasion, when playing the game, the audio driver goes absolutely nuts. It keeps spamming that I've plugged in/unplugged a device into the audio jack, even though I haven't touched it. I eventually just unplugged my speakers, but it still was weirding out. The only way to fix the issue momentarily was turn on focus assist. It usually only does it in Fallout 4, though.

Issue 3: So I recently visited the diagnostics page for my Alienware Aurora R4, and I saw there have been a ton of driver releases fairly recently. Do I need any of them, and will they break my PC? I updated my BIOS in order to go to Windows 10, but that kinda broke my PC. I had to take it to the shop, where the dude did something with RAID and boot type, and that fixed it. I haven't really cared to toy with my PC since that fiasco. Heck, I paid $50 just to have a new GPU installed. (Which was a good thing; they had to grind a little off the back plate so the thing didn't collide with one of the many needless fans in the system.)