Checking the Computer Fans

[original]

I replaced the memory sticks, and while doing so I disconnected the CPU's fan because it blocked the forth stick. At first the computer didn't turn on and started to make many beeps, so I tried again and after making sure the sticks are connected properly I turned on the computer and now it's working as it should. Yet, I am not sure the CPU's fan is connected properly, and that the case fans work properly as well. The computer is more than 3.5 years old, it includes i5-2500K (without an overclock), its fan is Scythe Yasya, motherboard P67A-UD3-B3, memory 4X8GB, case Lancool K60W, power supply Corsair TX 750W, video card HD6950 2GB and two hard drives SAMSUNG 1TB Spinpoint F3 HD103SJ, Seagate Barracuda ST3000DM001 3TB.

After turning on the computer, I got the following results with SpeedFun and AIDA64:

I am not sure about the results, because it shows that 3 fans (two of the case and the CPU's fan) are 0 RPM according to SpeedFan, and don't appear at all in AIDA64. Are these results normal? How do I check if the Case fans and the CPU's fan are working properly, and if they don't work properly - How do I fix this?

 

[ignatzatsonic]

Where do you see that the CPU fan is at 0 rpm in the above pictures?

If it were 0 rpm, you can be sure the CPU temps shown in the second picture would be much higher. There's nothing wrong at all with mid 30s temps.

How many total fans do you think you have in that PC?

Power supply, CPU, video card, and 2 case fans?

What do your eyes tell you when you look inside with the PC is running?

 

[original]

The case (Lancool K60W) contains 4 fans, and the CPU and video card contain fans of their own. If I understood it correctly, the motherboard (P67A-UD3-B3) supports 3 fans + the CPU's fan. These are the motherboard and the fans:

Is it connected correctly? Are the results from SpeedFan and AIDA64 considered normal?

 

[ignatzatsonic]

Looks like 2 fans on the top panel, 1 intake on the front blowing over the hard drive, and 1 exhaust on the back. That’s 4.

I don’t see anything that indicates your temps are high or that anything is wrong.
Some of those fans may be unnecessary or poor performers, but on the face of it I don’t see any problems.

Wattages look OK. Hard drive temp looks OK.

I have no idea about your motherboard, fan connectors, or monitoring capabilities. You could refer to your manual or just do some trial and error disconnecting of the various case fans to find out which fan corresponds to which of those RPMs shown in your first pictures.

If all fans appear to be spinning by eyesight and you are satisfied with the noise level and temperatures, I wouldn’t worry about anything.

You might run a Prime95 test to see how hot or noisy things get under a good load.

Looks like a Scythe fan on the CPU heatsink and I assume those are Lian Li case fans. I had a few of them in a Lancool PC-K65 case myself. They ran at 1500 rpm and weren’t designed to be quiet. Scythe fans are generally good performers.