Question Power off and gpu fan still runs

[zealousray]

Thought id run this by you guys to see what you think. I bought a evga supernnova 850w G3. When I installed the G3, my periferals and gpu fans are staying on when I turn the pc off. I returned the new g3 psu to evga and they sent me a new one, and I have the exact same issue. I can stop the gpu fans from running by pulling the main mb plug only. like I said, when I turned my old psu off, everything went off properly. I even reinstalled my old psu and everything goes off as it should.

Mb asus rog strix x370-f gaming
Msi geeforce gtx 980ti

 

[Lutfij]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:

What was your previous PSU's make and model and why did you need to replace it? Have you tried breadboarding the system and seen if the issue crops up outside of chassis? On another note, are you on the latest BIOS update for your motherboard?

 

[Dark Lord of Tech]

Has to be an issue with the power settings or possibly the board.

 

[AllanGH]

I even reinstalled my old psu and everything goes off as it should.

Odd as it may sound to some, ^^^that^^^ makes it sound like your new PSU is the culprit, here.