help please!

So this just started happening tonight. (YAY!) Everything has been working for months, so I assume something is starting to die. It's possible I might just need a bigger PSU, but that's why I'm here. I do a lot of 3D modeling in Blender, and for whatever reason my PC is now crashing whenever I...

I'm trying to put together a pc for myself and one for my brother. We ordered 2 of every part and I spent the night trying to get them to run. The build is: Motherboard: Asrock Fatal1ty X470 gaming K4 CPU: AMD Ryzen 5 3600 GPU: Gigabyte GeForce GTX 1660 Ti PSU: Seasonic 750w 80+ gold RAM...