Tom Tancredi :
VISUAL inspection, don't rely on software EVER about HARDWARE. Do you see with a flashlight on the fan when running your 'stress test' the fans NOT moving? If so, then yes RMA, otherwise your getting a false negative worry. ...
LightningsalesUK :
It is on a clean Windows 10 install with only Steam and Nvidia geforce experience downloaded.
FORGET Windows, Steam, Drivers, etc. at this point, NO SOFTWARE is involved in what your saying YET.
LightningsalesUK :
There does not seem to be any lights on the card at all even when under load..
You did NOT read what I said. So please follow EXACTLY as I say:
1) Place computer on DESK on its SIDE POWERED OFF so the fans are facing you, your keyboard and the monitor
2) OPEN computer
3) get a FLASHLIGHT
4) Put flashlight's LIGHT on the fan. Power on computer, do you see fans move at all?
5) Load Windows, then a game / benchmark program
6) With light on the fan do you SEE it now spinning while UNDERLOAD?