Forgot to add:
FOV does nothing.
It's all about the HUD.

https://www.youtube.com/watch?v=aFlKKq_tEbs

π = 180° in radian.
The math checks out.

#2273
Something like this:
PCPartPicker part list / Price breakdown by merchant

CPU: AMD RYZEN 7 1700 3.0GHz 8-Core Processor ($319.99 @ Amazon)
Motherboard: Gigabyte GA-AB350M-D3H Micro ATX AM4 Motherboard ($89.99 @ Amazon)
Memory: ADATA XPG Z1 16GB (2 x 8GB) DDR4-2800 Memory ($99.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($93.99 @ Amazon)
Storage: Toshiba P300 1TB 3.5" 7200RPM Internal Hard Drive ($48.99 @ Other World Computing)
Video Card: EVGA GeForce GTX 1080 Ti 11GB SC2 Video Card ($719.99 @ B&H)
Case: Cooler Master N200 MicroATX Mini Tower Case ($49.98 @ NCIX US)
Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($69.39 @ SuperBiiz)
Other: BenQ Zowie XL2411 ($300.00)
Total: $1792.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-08 06:05 EDT-0400

Change the case to whatever you want to.

#2274
They are roughly equally mediocre.
Not sure if that's what you're going for.

I don't need an exact temperature. I mean if it's at 30°C it's probably not overheating, if the thermometer can't even show the temperature it probably is.

So you want to make sure it's the PSU, but are unwilling to do even the most basic test?

I mean if a 40°C thermometer isn't enough then either your room is insanely hot and the PSU is running outside of spec (which model exactly anyway?) or it's overheating.
You could find out by actually doing the test.

#2266
I was going to post something yesterday but then I started waiting for more edits with creative spellings of "in advance".

Are you in the US?
Monitor included in the budget?
Fps/settings you're going for?

#2270
Competition mostly.
Not sure what mid price is.
Power efficiency will ideally be close. If you expect AMD to jump from far less efficient to more efficient while using a less efficient process you're most likely going to be dissapointed.

Also Vega is an architecture. There's different chips. Vega 10, the "big Vega" (~500mm²) comes first. Unless AMD massively fucks up cards based on that are going to fill the range from 1080 Ti to Titan Xp (nVidia still refusing to use numbers for Titans, it's getting ridiculous). No one knows yet when Vega 11, the smaller one, as in somewhere around the 1070/1080 will turn up. Then there's also Vega 20, but let's not go there.

1. memtest86. Because you never know.
2. Get a thermometer. Put it at the PSU's exhaust. Note the temperature when the PC crashes. Note it again once it's successfully booting again.
You can obviously do 1&2 at the same time.

8.1 with classic shell is basically windows 7, except slightly faster.
Just hope you never have to change any system settings because they are sometimes duplicated and sometimes only in either metro or normal control panel and it's completely random.

10 feels like someone at microsoft though "well we finally made a good OS again, surely it's good enough that people will put up with the 5 tons of bullshit we've been waiting to add"

#11
There are downsides and you can't.

https://www.youtube.com/watch?v=b3_lVSrPB6w

No, your mouse won't support USB 3.0 so it'll run at 2.0 anyway.

Technical explanation:
A "normal" mouse will usually only support 16 bit / axis at 1000 Hz.
2 axes * 16 bit/axis * 1000 Hz = 32 kbit/s.
USB 2.0 supports 480 MBit/s (although in practice it's only 280 MBit/s).
So that's a serialization delay of ~0.14ms. No one cares.

Now there is one reason why you'd want to use USB 3.0 for a mouse:
To overclock it.
Why?
Because 8000 Hz sounds cooler.
http://www.overclock.net/t/1589644/usb-mouse-hard-overclocking-2000-hz

Yes.
It's fine now, just do it again if it happens again. Ideally both google and the IP of the server it happened on.

As in windows cmd.
Not in the TF2 console.

Once he actually runs ping -t for more than 1 second we might be able to.

You need to let ping -t run for a while. Screenshot the result. Seems like you simply got 90 ping though, which explains why it feels like ~100, because it is.

Interp is fine. Most prefer >30 for hitscan and >15 for projectile classes. So for shotgun solly it's preference anyway.

Depending on the specific model you might be able to replace the thermal paste, which might be the issue.
Most likely there's not much you can do yourself without the right tools and experience though.
Not sure if you're willing to pay money to have it fixed.