New build, after a few days experiencing issues with computer rebooting mid-game.

[~Lachlan]

Hey,

 

Have recently built a new PC for a friend, and after a few days his computer has started to reboot itself, while playing games (ie. Rocket league and CS:GO).

 

I'm quite stressed at the moment as it's his rig on the line. Here are the specs:

 

i7-8700 with Thermaltake Frio 12 Silent Cooler

16GB Corsair Vengeance DDR4 RAM

Gigabyte RTX 2070 Gaming 8GB

700w Cougar CMX700 80+ Bronze PSU

Gigabyte B360 Aorus Gaming Motherboard 

480GB Crucial BX500

2TB Seagate Barracuda HDD

 

Any ideas on why this could be happening? I've tried monitoring GPU and CPU temps and they seem to be normal

 

[Nocte]

No minidump reports?

If there are no BSoDs we cannot really help. If there is nothing you can use, then I would try to run memtest via USB and if the sticks are fine then I would just reinstall Windows from scratch.

[~Lachlan]

Unfortunately no errors. Just starts rebooting. RAM sticks are fine, all 16GB shows up. I don't know if it's a software problem though? When using IGFX it doesn't have this problem. So, I'm thinking it could be a PSU or a GPU issue?

[0x1e]

1 hour ago, ~Lachlan said:

Unfortunately no errors. Just starts rebooting. RAM sticks are fine, all 16GB shows up. I don't know if it's a software problem though? When using IGFX it doesn't have this problem. So, I'm thinking it could be a PSU or a GPU issue?

A black out normally points towards a PSU problem.

[~Lachlan]

13 hours ago, 0x1e said:

A black out normally points towards a PSU problem. 

Hmm. I have read that the Cougar CX700M I purchased has some issues with voltage regulation with anything over 560W. This is horrible since it's rated as "700W". I'm going to get my friend to come over tomorrow and I'll try out my trusty 620W Antec High Wattage PSU that guarantees to pull its 620W, which should be sufficient for the RTX 2070 build. I'm suspecting dodgy PSU because limiting CPU to 70% and GPU power limit to 71% solves the problem. Anything higher and computer will reboot when heavy load is applied.