Computer turns on but No CPU fan

Rivunel · Mar 23, 2015

I built a computer for my wife about a week and a half ago. All worked well until a couple of days ago she went to start up the computer and all fans turn on except CPU fan. the computer no longer is sending a display and the video card's, which has an LED, fans spin but the LED does not turn on. Everything in the computer appears to be working except for the CPU fan.

I have attempted unplugging and replugging everything back in.
I plugged the CPU fan into another spot on my Motherboard which did nothing.
I get no beeps when pc turns on however when it worked properly at boot up it gave a singular beep.

My Build
MotherBoard: MSI760GMA-P34(fx)
Processor: AMD FX6300
Ram: Kingston HyperX 8GB (4GB x 2)
Video Card: Sapphire Radeon r9 280 3gb
PSU: XFX TS 550w
Hard Drive: a 2TB Toshiba / 1 tb WD

P.S. this is a repeat post i realize my first post was poorly written which is why i received so few replies.

nostall · Mar 23, 2015

Have you tried another fan in place of the CPU fan. It sounds like the cpu fan died. AMD will replace it, might even send along a whole new heat sink: I had a fan on my Phenom 4 core go bad and they shipped promptly, had it in less then 2 days.

nostall · Mar 23, 2015

Thanks, did another fan work?

Rivunel · Mar 23, 2015

I didn't mean to pick this as the solution.... Stupid touchscreens... Would the fan being broken cause the display to no longer work? Or will the cpu not start without a fan?

nostall · Mar 23, 2015

Rivunel :

O.k., I unselected it. Choose again later. I don't know specifically about your motherboard, but some won't let the PC post without a working CPU fan. This, I believe, to keep the system from starting and booting and frying the CPU eventually because of lack of cooling air.. If the processor isn't starting, then nothing else is going to start.
You said that you tried the CPU fan on another header which did nothing: do you mean that the fan did not spin at all, or that nothing changed with the start-up and running (and that might be the case as no fan was plugged into the CPU fan header.)?
Try another fan, even if you have to buy one and later return it (though they are inexpensive enough to just hang on to for trouble shooting or whatever) and try that. Make sure the connector is the same as the AMD one so you can simply plug it in.
http://www.newegg.com/Product/Product.aspx?Item=9SIA2XC1DZ1225

Rivunel · Mar 23, 2015

nostall :

Rivunel :

O.k., I unselected it. Choose again later. I don't know specifically about your motherboard, but some won't let the PC post without a working CPU fan. This, I believe, to keep the system from starting and booting and frying the CPU eventually because of lack of cooling air.. If the processor isn't starting, then nothing else is going to start.
You said that you tried the CPU fan on another header which did nothing: do you mean that the fan did not spin at all, or that nothing changed with the start-up and running (and that might be the case as no fan was plugged into the CPU fan header.)?
Try another fan, even if you have to buy one and later return it (though they are inexpensive enough to just hang on to for trouble shooting or whatever) and try that. Make sure the connector is the same as the AMD one so you can simply plug it in.
http://www.newegg.com/Product/Product.aspx?Item=9SIA2XC1DZ1225

I will try this thank you very much. i will update when i have received a fan

nostall · Mar 23, 2015

Rivunel :

nostall :

I will try this thank you very much. i will update when i have received a fan

Your welcome. And if it does turn out to be the fan, call AMD and actually talk to someone (it might take some effort) and I would bet they will make it good.
If it doesn't solve the problem, then we will have to continue to troubleshoot: I am thinking positive here, still think it is the fan.

Rivunel · Mar 30, 2015

I replaced the fan today and the computer starts up fine. When I first tried starting it it rebooted 3 times on its own but I unplugged it and plugged it back in and its fine.

The fan I received with the motherboard didn't have an and symbol on it while the replacement fan does. Could the original fan have been replaced by a cheaper knock off by the amazon seller?

nostall · Mar 30, 2015

Rivunel :

Possible, but not likely. PC makers cut corners in a lot of places and if they saved .1 cents by not having the fan marked they would probably do it. Glad you are back up and running!!!

Rivunel · Apr 15, 2015

No Longer fixed! going to repost question..

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