"CPU Fan Error" ... Noctua R8 PWN Spins but isn't dectected?

[100th Monkey]

Alright, so i have an old HP computer see specs for the most part here >

http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c01638224&lc=en&jumpid=reg_r1002_usen_c-001_title_r0004

I've put a 120 kingston SSD, a Seasonic 620w PSU, and a GTX660 in it.

Along with two new Noctua fans... one being a 3 pin case fan (works wonderful) and the notorious 4 pin noctua nf-r8 pwm that is giving me issues.

I've read around and I haven't yet found exactly the same issue I seem to be having. Which is... my old fan works fine... other then the gradually progressive ageing bearings in it. It's the stock Cool Master fan that came with the computer. When i swap in the brand new Noctua into the system won't boot... all i get is "CPU Fan Not Dectected... ect ect must shut down to avoid critical damage" or something to that effect... and it shutsdown... so I can't get into the BIOS even if i wanted to. At least not with the Noctua in it.

The catch is I'm watching the fan spin the entire time while the thing tries to presumably find said fan... so I swap back to the old fan... and it works fine...I'm left to assume the MOBO is fine, and i didn't gimp a pin on the removal of the old fan. I've swapped back and forth a half dozen times hoping one time it would just work... to no avail.

Unfortunately i can't just go into the Bios and "ignore CPU warning" because there is no such setting in my BIOS (which I have fully updated to v5.43)

I've downloaded Speedfan... and they don't show up in the Configure > Fan Control section

Oh and i've running Win7 now... any thoughts, or wild and crazy theories are welcome.

Sincerly, Monkey.

 

[ganon11000]

As long as it's spinning it should be fine. Just set a CPU temperature warning in case they fail.

 

[100th Monkey]

As long as it's spinning it should be fine. Just set a CPU temperature warning in case they fail.

If i was able to do that i would... but even though the fan is spinning as it should i get the error

"ERROR: CPU Fan Has Failed! PC will automatically power down in a few seconds. Service the PC immediately to prevent damage to the PC."

immediately powering on and it shuts down before i can do anything...

Only options i have left is to buy another motherboard and cpu or try to track down the exact same fan that it had and hope it's bearing isn't junk too.

 

[ganon11000]

As long as it's spinning it should be fine. Just set a CPU temperature warning in case they fail.

If i was able to do that i would... but even though the fan is spinning as it should i get the error

"ERROR: CPU Fan Has Failed! PC will automatically power down in a few seconds. Service the PC immediately to prevent damage to the PC."

immediately powering on and it shuts down before i can do anything...

Only options i have left is to buy another motherboard and cpu or try to track down the exact same fan that it had and hope it's bearing isn't junk too.

Could you attach the old fan to the new cooler?

 

[100th Monkey]

As long as it's spinning it should be fine. Just set a CPU temperature warning in case they fail.

If i was able to do that i would... but even though the fan is spinning as it should i get the error

"ERROR: CPU Fan Has Failed! PC will automatically power down in a few seconds. Service the PC immediately to prevent damage to the PC."

immediately powering on and it shuts down before i can do anything...

Only options i have left is to buy another motherboard and cpu or try to track down the exact same fan that it had and hope it's bearing isn't junk too.

Could you attach the old fan to the new cooler?

I have been using the old fan... but i got the Noctua replacement because the bearing is starting to go on it. Best I can surmise is the motherboard is just to old, and the Noctua fan is to new that they don't wanna play together...

The really odd bit is even the HP site says if the BIOS is missing the fan options to update it.... well i've done that and it didn't change anything. The fan control/warning options aren't there.

 

[ganon11000]

I would say the fan is faulty because all fans use the same signaling system.

 

[100th Monkey]

I would say the fan is faulty because all fans use the same signaling system.

Alright, well good to know, Thank you.

I'll see how arduous it is to get it exchanged.