System crashes under load.

[Alex01]

Hello everyone!

Few months ago, got my new build (except PSU, HDD), everything was running fine (I guess, at least didn’t notice). (!)Then I got a new GPU - 2070Super. (!) Before I inserted new GPU I’ve updated my bios and other mobo drivers (latest stable versions) After that in a month my PC started rebooting when I left him idle. Noticed it after several times. It was like once or two a month. But last month or two, when playing games it began to reboot more often, sometimes twice a day I guess. 
 

Have no idea how to fix this. Would really appreciate help. 
 

 

 MY BUILD: 

 

MB: B450 tomahawk

CPU: Ryzen 7 2700x

GPU: Palit RTX 2070 Super Jetstream

Memory: HyperX Predator DDR4 3200Mhz 2x8gb

PSU: OCZ 750W

SYstem SSD: WD 250GB SSD

HDD: WD 10 EZEX

NVME: Samsung EVO 860

 

P.S. Tried some advices like turning on the high performance. Read some stuff that it might be old PSU but I have no idea how to check it and it ran well before new GPU. Ran Furmark 1080, everything was ok. 
 

thank you in advance!

[BlackManINC]

@Alex01

 

Its not so much that the power supply is old, but it has more to do with its build not quite being the highest quality, assuming the power supply is whats causing your PC to crash. A decent power supply should have all of the following protection features. Your power supply is missing the ones in black, according to the review below, so I would get a gold rated power supply of the same wattage or more, and just make sure it has all of these protections listed. Some will have even more protections than this, but it definitely shouldn't have any less. 

 

OVP, UVP, OCP, OPP, SCP, OTP

 

Link: OCZ Fatal1ty 750W PSU review

[Alex01]

@BlackManINC so it’s most likely a PSU problem? No ram? No MoBo or GPU? SSD? 
 

pretty weird because my PSU served me for like 6-7 years without a problems on my previous build. 
 

thank you. 

[BlackManINC]

5 hours ago, Alex01 said:

@BlackManINC so it’s most likely a PSU problem? No ram? No MoBo or GPU? SSD? 
 

pretty weird because my PSU served me for like 6-7 years without a problems on my previous build. 
 

thank you. 

I mean, it could be anything. You can test your ram with the app below, try one stick at a time even to see if they are faulty. But that power supply isn't really up to standard either for what is considered a good power supply. It may not have given you any issues beforehand, but things can change once you upgrade to a better GPU. 

 

Link: https://www.memtest86.com/