Stability issues with new build

[Somedude11]

 

I'm having problems with my new PC. It's my first build, and it mostly works, but the system locks up after periods of inactivity. It will freeze on the Windows login screen and requires a system reset (long hold down on power button) to bring it back up. It works fine outside of this issue; as I said periods of inactivity, or if I put it into "Sleep" mode seems to cause the problem. 

 

Operating system: Windows 10 Home 64bit. Build 17763

CPU: Ryzen 5 2600X 

GPU: RX 580 Armour MK II (Radeon Software version 19.1.1)

Motherboard: TUF B450M-Plus Gaming (ASUS)

RAM: 16gb (2x 8gb) Corsair Vengeance RGB.

750W PSU. 

Samsung 860 EVO 250gb SSD. 

 

Any advice or help would be appreciated. I'm new to the self-build game, and I wasn't able to find anything online that sounded similar to my issue. 

I hope I've provided enough information. Thank you. 

 

[Slottr]

Run memtest

Or could prossibly just be a weird windows install

 

What power supply?

[Somedude11]

I'll run the memtest. 

 

Thermaltake Toughpower Grand RGB 750W Fully Modular 80 Plus Gold Certified Power Supply 

[Somedude11]

Ran memtest86.

 

No errors revealed.