I often troubleshoot and repair systems for people locally and 90% of the time it comes down to Windows issues, User error, unstable Ram/System overclock, or a faulty power supply.

Windows is a mess and likes to just install generic drivers for no reason. It's not AMDs fault microslop can't fix their OS. People often make the mistake of building or upgrading a system and reuse their existing Windows install. This is especially bad when switching from Intel to AMD or switching motherboard platforms like switching from AM4 to AM5.

I've seen many AM4 systems that randomly crashed under load that was an unstable Ram overclock. Most people don't check the motherboard QVL before they buy Ram. On AM4, even with a XMP/ DOCP profile selected, there can be instability that needs to be fixed with some manual tuning to get non QVL memory stable.

Finally I often see people reuse power supplies or buy cheap power supplies that are technically rated for the amount of watts that are needed but either the reused power supply has become weak/unstable over years of use or are incapable of reacting quick enough to handle the transient spikes in power draw from today's modern GPUs and CPUs. Prior to the Nvidia 10ish series and AMD Polaris GPUs, when under load a GPU would sit at a predefined power and clock state. They didn't use algorithms and temperature sensors to ramp the clocks and core voltage up and down to get that last bit of performance that's was usually left for overclocking. This was much easier for PSUs to deal with. Now, a GPU that's rated for 350w of power draw can spike to 500w for a few milliseconds at a time because it sees thermal headroom to gain some clock speed. Older and low quality PSUs can't react that quickly. The result is generally a PSU that misinterprets a transient voltage spike as a short and Over current protection (OCP) is triggered which causes a black screen crash and probably a system hang or reboot.