Pc crashes when not under a load. Help!

[Hemispherion]

I need help, my PC has been crashing a lot. When i open my PC i have to open a game, just so it wont crash. It will not give me any code or error screen when it crashes, it just reboots itself. My PC was recently built, all the parts are new. There seems to be no vdroop or LLC on my board, so i couldn't do anything with that. And this started to really happen when I reinstalled windows, I have reinstalled it again multiple times, but that didn't help, so if you have any ideas to help me out please give me them, I really have no clue what this could be. Thanks!

System Specs:

CPU: Ryzen 5 2600

GPU: Asus Geforce GTX 1060 6gb

RAM: 8gb T-Force RGB.

Motherboard: Gigabyte B450M DS3H

Power Supply: Evga 550w G3 80+gold

 

[RobbinM]

Did you alter any vcore settings at all? If so, tried to reset BIOS?

[Hemispherion]

6 minutes ago, RobbinM said:

Did you alter any vcore settings at all? If so, tried to reset BIOS?

I have reset bios and it didn't do anything.

[RobbinM]

Very strange. It would seem that either your CPU isn't stable at the rated idle voltage, or your motherboard fails to deliver the right voltage.

You might want to RMA your motherboard.

[Hemispherion]

17 minutes ago, RobbinM said:

Very strange. It would seem that either your CPU isn't stable at the rated idle voltage, or your motherboard fails to deliver the right voltage.

You might want to RMA your motherboard.

Okay thanks for the help ill try to let you know if it resolves my problem.

 

[LogicalDrm]

Check every cable. Straight on reboot is most likely power delivery issue with some part. But did you say you can run game without issues?