just installed 2 fans and on powering up that what I got, code 40, and no it's not AO. also there's no waking up from sleep. any idea why this would be? thx

this has happened before. using a cordless r.a.t. 9 mouse. battery died and changed it out and my rat stopped working, when it worked before batt died. I have a corded version and connected to a front USB, that worked fine. for the receiver I changed...

to have a 4pin cpu connector in the top center socket? my psu came with 1 4+4 cable which is already in use on the 8pin to the left of the 4. thx