Newly built PC shuts down while gaming

[Ereveton]

Evening peeps!

I recently build my new PC(specs in spoiler below). For about a month everything ran smoothly until a week ago when sometimes while gaming it'll randomly shut down.I might go a day or two without any crashes, then shut down 2-3 times in a row in 5minutes, and only when gaming. It doesn't matter if I'm on RDR2, CSGO, EFT or Star Citizen, in Ultra or Very Low settings, sometimes it'll run perfectly for long periods of time or just not stay on as soon as I load in game. No locking up, no BSOD, it just shuts down like its power got cut off. Also, any benchmarking that puts load on the GPU causes the same crash, while putting load on my CPU by rendering on adobe premier works fine.

 

I reseated everything on my mobo, made sure cables were properly attatched etc, Windows and drivers are up to date(clean install of Nvidia drivers to be sure), tested RAM sticks individually with no issues.

HWMonitor shows good temps so it shouldn't be a heating issue.

Now, I'm pretty sure the culprit is my TurboX 750w PSU. It is 6 years old, but had no issues on my previous rig so I cheaped out and moved it over to the new one. I noticed its fan isn't always spinning anymore (not temperature controlled),so I'm assuming it's overheating and unable to provide stable power to the gpu under load, or just straight up dying.

Any ideas what else the issue might be before I place an order for a new PSU? Any other troubleshooting steps I could try?

 

 

 

Spoiler

 

Hardware::
Ryzen 5 3600x (with its Wraith Spire cooler but not OC'd)

RTX 2060 6gb OC from Gigabyte (running on 1080p 60hz,hdmi connected to my monitor) 

ROG Strix b450-f gaming mobo

Vengeance RGB Pro 2x8gb DDR4 3200mhz

4xDeepcool RF120B fans 

1x120gb SSD

1x500gb m2 nvme ssd 

 

 

OS: Windows 10 Pro N 64-bit

 

 

[jaslion]

Oh hey I know that psu. It croaks at around 350-400w of power no wonder the system is not working because of it. Lucky that it hasn't damaged any pcs yet.

 

If you want more info about it it's xilence's very old pc killer of a dumpsterfire psu and man do I have seen that thing one too many times :p.