Question Gpu display off on gaming

[tomlak]

Hi! I just bought a new pc. Windows boot up normally and the system works just fine with no overheating. Unfortunately when I'm going to play ghost Recon wildlands or battlefield I have problems. When I am in loading to play it crashes display off and my gpu starts to spin at 100%.After I need to restart the pc...The gpu and the cpu aren't overheating and I don't know what to do.
I have....
PCU:asus prime B460m-k
GPU:Gigabyte gtx 1660 ti 6g
PSU:Turbox 450w
RAM: 2X4 DDR4
HDD 500G +SSD 240G

 

[rgd1101]

test with a better psu?

 

[tomlak]

I don't have one in the moment to test and neither a friend to borrow one