Question My GPU fans turn then off after a few seconds with no display

[Thatguy123.4]

GPU fans only turn of after a few seconds when connected to the PSU if the 6 pin cables aren't plugged in the fans stay on but still no display

 

[rgd1101]

full system spec? include make and model of the psu

 

[hang-the-9]

Also need to add some more details about the issue, is this a new build? New card? What was done before the issue started?