Question Monitor keeps going Black but pc is still on with sound!

Mar 2, 2019
Hey guys so I’ve recently built a new pc a few months back and everything has been fine, except for the past month or so. I have an issue where my pc will stay on with sound but my monitor will just go black and sort of go into a “standby mode” not sure why but it first occurred when I was streaming counter strike one day and now it seems to happen more frequently along with random freezes on Rust both things resulting in a reboot, I’ve noticed it will happen when I try to open a program from my task bar while in game. I’ve had an issue like this with my old pc and could never figure it out. I also can seem to update my bios I’ve tried with multiple formatted flash drives and no luck!
If anyone could shed some light on this weird situation it would be great I’ll post specs down below.

Cpu: Ryzen 1700x
Motherboard: MSI X370 Gaming Pro Carbon
Gpu: Sapphire Radeon Nitro+ RX580 8gb
Ram: GSkill Trident Z 8gb 288pin 3200 DDR4
HDD: western digital caviar blue 1tb
No SSD yet
Cooling is also very efficient It tends stay below 40 degrees Celsius
Also all drivers are up to date I check them daily!