Question Gaming Pc randomly shutting down while playing games

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So im having this issue that has started recently that is causing games like Escape from Tarkov or Red Dead when under load to randomly start shutting my PC down no blue screen no error nothing. Im not sure if it is the PSU which i think could be the problem however i just built this PC in September with all new parts so would be shame to have to contact support about the PSU. Im wondering if anything else could be the cause any programs i could use to test the PSU? The PSU is https://www.newegg.com/evga-superno...-x1-850w/p/1HU-00J7-004V4?Item=1HU-00J7-004V4 and my PC specs are in the image

https://imgur.com/BvfadIC

View: https://imgur.com/BvfadIC
, idk if it could be the RGB pulling more power then it can handle anything i could be missing? Trying to avoid it messing up any other components in the PC , also ordered a new power strip as it is OLD so maybe that could be it limiting watts?

 

[Lutfij]

To rule out the PSU being the weakest link, source a donor (reliably built)PSU from your friend or neighbor and see if the system shuts off when taxed. On another note, did you take note of your temps just when it reboots? You can get into BIOS straight after the reboot to see what temps show you.

Your spec's don't show the make and model of your aftermarket cooler or the age of the PSU(if it was recycled from another build).

 

[UnFound]

To rule out the PSU being the weakest link, source a donor (reliably built)PSU from your friend or neighbor and see if the system shuts off when taxed. On another note, did you take note of your temps just when it reboots? You can get into BIOS straight after the reboot to see what temps show you.

Your spec's don't show the make and model of your aftermarket cooler or the age of the PSU(if it was recycled from another build).

So the cpu cooler is https://www.amazon.com/gp/product/B07DV29GYN/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
All the parts were bought around the 16th of September and put together new around the 20th of September havnt had issues till about a week ago
Dont think it was the temps as the cpu stays around 60-70c under load and gpu around 70-78c depending on the game
Case is https://www.newegg.com/black-cooler...-tower/p/N82E16811119378?Item=N82E16811119378
and just added one small fan for more flow if that could throw of the Psu ?

 

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Are there programs i could download to test the PSU to see if it is working properly ?