PC Reboots while playing games

[antho1]

Hello, i have a problem with my PC.
If i play a game, like GTA V CS:GO GTA IV, my pc reboots.
Also as i run AIDA64 for 1 second my PC reboots right away.
Ive tried to install a older driver, same problem i installed a newer driver same problem.
Also i tried to put my memory in a diffrent bank's same problem.
Its not a overheating problem my CPU onder load: 67
degrees
GPU onderload: 54 degrees...
I have a overclock on my CPU from 3,2 to 4Ghz i set the overclock back same problem 🙁

I think its a power supply problem i have the Corsair VS550.

Other specs:
CPU: Intel Pentium G3258 @ 4.0 Ghz
GPU: Gigabyte R9 380X @ 1000 Mhz
Ram Crucial Ballistix Sport 8GB
SSD (OS) Kingston SSD Now 120GB
HDD (Storage) Western Digital Blue 1TB
PSU: Corsair VS550
Motherboard: Asrock B85M Pro3

(Sorry for my bad english)
Can some one please help me?

 

[Oaklandmurphy]

You probably have a faulty power supply, the type of crash you are experiencing is caused by one of two things 99% of the time: overheating and insufficient power. your temperatures are fine so my bet is that your power supply is not providing enough power when your system is under heavy load.