Those require you to install the BIOS that the maker calls for as well as drivers and set the BIOS per the maker or a forum telling you what to set it to. I encounter a lot of Ryzen systems where the self builder never heard about all the work needed.
Finally there are games that will reboot such as Fallout 76 and it's not your PC at fault.
I recently built my first PC, and I ran into a problem. When I play games like League of Legends, my PC works fine. However, when I play other games like Sea of Theives and Beat Saber, my PC reboots. The strange thing about it is that I play a game called A Dance of Fire of Ice, which even a lemon can run, and that also reboots my pc. I do not get a BSOD, it shuts down as if I turned the PC off and on again. I've also ran Time Spy, with no reboot. All of my drivers and bios are up to date, I'm on the latest version of Windows 10, and my temps are reasonable, around 60-70C. Full load CPU temp is around 80-85. I've searched my problem online, and I think the problem might be AMD drivers. MSI BIOS ver. 7C02v35
Specs: Ryzen 3600 RX 5700 XT Red Devil MSI B450 Tomahawk MAX OLOy x2 DDR4 16gb 3200 Corsair CX750M(the white version)

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic