None of the case fans are working...

jimbob010

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Sep 22, 2014
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4,510
I've just installed an SSD and upgraded my PSU to a AX760 and it runs like a dream. Trouble is, none of the case fans now work :( I've tried different 4 pin connectors in all the different MB (Sabretooth Z77) slots but nothing... The CPU fan is working fine as is the extra little MB one (runs of the 3 pin 'asst fan1' socket. Very confused.

Can they all fail? How can I test? Could it be BIOS settings? The previous PSU had Molex cables for the fan to connect to the PSU, the AX760 doesn't.

Any ideas gratefully received!

(Shallow depth of knowledge when is comes to components but know just enough to upgrade my system from time to time so feel free to explain your point in the simplest terms :)
 
Have you got a molex fan connector you can use to plug fan directly into PSU? That will tell if your fans are dead or not.

Otherwise, try loading 'optimised defaults' in BIOS and if that doesn't help, CLEARING THE CMOS - check the board manual for the specific instructions for this.
 

jimbob010

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Sep 22, 2014
2
0
4,510


Sadly, this PSU is fully modular and doesn't have molex connections. Tried the BIOS, no joy.