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New motherboard installed, 100% CPU fan speed, no audio

Last response: in Motherboards
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August 8, 2012 1:18:39 AM

Hello, community. I've been having problems with this computer from day 1. I bought a debranded HP Pavilion desktop off of Newegg about 5 or 6 months ago. After numerous memory errors and failures, I determined that the RAM slots were faulty. Of course, the only solution was to replace the motherboard. So I bought a new MSI 760GM-P23 from eBay, and had the guys at the local computer shop install it. I got the computer back today, inspected the inside of the case, checked the wires... everything seemed to be in the right place. I hooked the PC up and booted it to find that the CPU fan was at maximum speed. I tried booting to Ubuntu and setting up pwmconfig, and only 1 of the 3 listed PWMs actually controls a fan, which is the rear exhaust fan. I booted to Windows and fiddled around with Speedfan, which listed 5 PWMs and the GPU fan speed. Again, only 1 PWM worked.

I've tried disabling C&Q, and I've tried setting "CPU Smart FAN Target" to all the lowest settings and rebooting, but nothing seems to console this helpless fan. I think it may have something to do with it being a 3-pin fan(?), but I don't know much about that type of stuff. The old motherboard (FOXCONN 2AB1) worked just fine with the CPU fans. It would be at a fixed speed upon bootup, and it didn't automatically regulate the temps, but at least I could control it with 3rd-party software. So I'm out of ideas. Any more you guys can offer me?

Also, for some reason, I cannot hear any audio with the onboard sound chip. I haven't investigated much on this (mostly due to the loud fan clouding my thoughts). Both the stock Windows drivers and the Realtek-provided drivers don't seem to solve the problem. I've also tried on Ubuntu, but all seem to produce the same symptoms: audio is playing, the OS *knows* there's audio playing (volume meters work), but I cannot hear any audio through my headphones. I thought it could be a wiring problem, so I checked again. AFAIK, the motherboard is connected properly to the front panel. I hope you guys can enlighten me.

Sorry for the lack of info, I do know much about computers, but motherboards are definitely not a strong spot. I'll try to provide all the information needed. Thanks for the help.
August 8, 2012 1:38:21 AM

Well it could be audio drivers in your GPU if you're using HDMI. If you're using speakers check if your HD audio header is plugged in.
August 8, 2012 1:53:23 AM

lt_dan_zsu said:
Well it could be audio drivers in your GPU if you're using HDMI. If you're using speakers check if your HD audio header is plugged in.

Thanks. Upon closer examination, I found that the connector was plugged in incorrectly. All is well as far as audio. I thought it might have been something minor, but I didn't really have the patience to figure it out on my own. So what about the CPU fan?
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a b V Motherboard
August 8, 2012 2:33:38 AM

You know what I do when I pay someone to do something and it isn't done right?
August 8, 2012 2:37:52 AM

jitpublisher said:
You know what I do when I pay someone to do something and it isn't done right?

Politely ask for a refund? But yeah, except for the audio header, I don't know if he did it right or not.
a b V Motherboard
August 8, 2012 2:41:06 AM

rectec said:
Politely ask for a refund? But yeah, except for the audio header, I don't know if he did it right or not.


No, I take it back and politely tell them that all is not correct and working, they are not "done" with it yet.
August 8, 2012 2:44:25 AM

jitpublisher said:
No, I take it back and politely tell them that all is not correct and working, they are not "done" with it yet.

Well, yeah. I guess that's what I meant to say. I will take it back tomorrow if I can't fix it myself. I don't want to take it back and have it be something obvious. I'll feel like an idiot. So any help you guys can offer is appreciated.
August 8, 2012 2:56:07 AM

Ok, I think I found the problem. The CPU fan has a 3 pin connector while the motherboard itself has a 4 pin connector. I read that the 4th pin is the PWM, but the old motherboard had a 3 pin and I could control the fan easily. Does this mean that I won't be able to control the CPU fan? Should I get a fan with a 4 pin connector?
!