Votivee

Have you pulled the board out of the case? It's possible there's something behind the motherboard causing it to short out.

https://www.amazon.com/APC-Protector-Back-UPS-Including-DataTraveler/dp/B07YBJRFWG I've got this, it holds my 3080 and 12900k long enough to save my game/work and safely shut down. I have two monitors but only hook one up to the battery. I don't know a ton about UPSs but I do know to look for one with a SineWave system. It would be a good system for your setup, you could probably go a little cheaper depending on your goals. Personally I would only look for something to hold your computer over 5-10 minutes unless you need extended uptime for some reason. Save your work, shut down. If you're in the US wait for Black Friday/Cyber Monday coming up. UPSs can get stupid discounts.

If you're pulling all of the keys off you can just use your fingers, IMO you really only need a keycap puller if you're pulling out keys in the middle of the board or if you can't get your fingers underneath the keys. I have a keycap puller and I just pop them off with my fingers on my K70

Nextcloud sounds like it might be a better solution for your needs. Basically Google Drive/Dropbox but you host it. Very (end) user friendly. You can run Nextcloud as a TrueNAS plugin. One thing to keep in mind is that if your clients are viewing very high res videos your internet may have a tough time keeping up. You can have the fastest computer in the world but your home internet speeds will never be able to compete with Google.

I've had Dell Latitude's at a few different companies now and never had an issue with them. They're solid workhorses and check most if not all of your boxes including ethernet and full size HDMI.

Go Arctic MX-4 and call it good.

What are the speeds you pay for?

Since we're testing the PSU here, if it wasn't strong enough you'd experience a restart almost immediately after starting the test since it will draw full power right off the bat. If that's not the case, maybe 10-15 minutes. Just make sure to watch your temperatures. You should have the following boxes checked. If you don't see the GPU box you could also run Furmark and run them simultaneously with aida hitting the CPU and Furmark on the GPU.

No.

Sounds like PSU to me also. Try running some stress tests for both your CPU and GPU at the same time and see if it shuts off. I'd recommend Aida64 and checking all the boxes except System Memory and System Storage. You might not be getting restarts with Heaven and Cinebench because they really only target one component at a time.

Not a silly question. It's pretty typical with new hardware to test it outside of the case to make sure everything works before building it. Yes, you can boot it and it will either say "Boot device not found" or go right into the bios. You can just turn it back off by turning the power supply off (if it has a switch), through the bios, holding down your case power button, or bridging the front panel jumpers with a screwdriver.

I have about 50 hard drives of all different manufacturers, capacities, technologies, ages, and sizes. I have a dual bay hard drive dock and I'm looking for a way to test these drives and thin out the ones that are no longer reliable. I understand I can check the S.M.A.R.T. data but from what I understand that looks at the current health data of the drives. I'm looking for a tool that will stress test the drives extensively and determine if they're reliable or not for future use. In my head I'm thinking something like Memtest but for hard drives. Is there a tool that can do this or will looking at S.M.A.R.T. data give me the same results?

Looks perfectly safe but if you stress both the FPU and Cache as well you'll likely see much higher temps.

What model is it? I had no idea Synology made a NAS without a network port. Kinda silly as that's the main purpose of that device... to be network attached.

If you can physically see GPU sag I'd recommend one. You can get all shapes and sizes. Some mount directly to the PCI slots on the case while others are just a support beam you put between the card and bottom of the case. See below.