I bought my new Msi gtx 1060 gaming 6gb and my pc turn off 15 minutes in game

[demolisherrrr]

Hello so i had gtx 1050ti and pc was worlimg well..when i put inside ne gtx 1060 6gb pc just turn off 15 minutes in game.when i was tested temperatures of cpu,gpu and motherboard everything was perfectly fine..none of that goes under 55 celsius.
CPU:Intel core i5 8600k 3.6ghz
Gpu:msi gtx 1060 gaming 6gb
Motherboad:Asus prime z370-p
Ram:Kingston hyperfury x 16gb(2x8)
Psu:coolermaster b700 v2 82+
Cooler:scythe katana4

I know that psu and cooler are not that good but should be enaugh and as i said temperatures are fine..what shoud i do?

 

[vapour]

sounds like a psu issue, can you borrow a good psu to test? 450+ good quality will do. Is the psu still under warranty? If so, RMA it.

 

[demolisherrrr]

Now i put other psu cable amd everything working perfect..weird