CPU Fan Failure Warning Beep

Fri Feb 08, 2008 6:37 pm

When I first built my machine, I was getting the fan failure warning beep when I started my computer - generally it would sound for about 2-4 seconds. (I have a core 2 duo e6750 on a gigabyte GA-P35-DS3L mobo and an arctic cooling freezer 7 pro HS/fan). After cracking the case and looking when I started it up, I noticed the warning was happening because there was a delay of about 1-3 seconds from when I hit the power to when the freezer 7 pro started spinning up.

I went into BIOS and disabled the warning and since have had no issue.

Lately I have been using the stand-by option to save money after reading about it in a pc magazine and finding it only takes two more watts then completely off. (9 in standby vs 7 off and plugged in).

So, I started using it but I get the same warning when I wake it up - this time it sounds for a good 4-5 seconds. Even with the warning disabled I still get it. I let it go and even after the latest BIOS flash it still is happening.

Any ideas on how I can not only get it to stop beeping coming out of standby, but also so I can have the cpu fan warning on in case of a real failure? Is this a mobo or cpu issue? Is it the freezer 7 pro that is faulty or simply a crappy product? Should I get another HS/fan and see if that fixes it? Thanks.

Fri Feb 08, 2008 9:20 pm

The question I have at first , is the fan trying to start when the warning buzzer sounds ? Maybe try the stock fan , see if you get the same problem. It could be slow to start , defective fan . Or it's not gettng power when it thinks it should be.

Fri Feb 08, 2008 9:46 pm

I suspect the BIOS setting called CPU SMART FAN CONTROL. I don't trust this feature and would rather run my fan at full or adjust it's speed manually. Simple fix if it works. I wouldn't think it's the fan since it comes on at all and you sound like it does the same thing everytime. A bad start would be sporadic I would think but you never know and I always like to have several options. Modern CPUs heat up really quick so you might want to fix it as soon as possible before risking a meltdown. Yes you can pop a CPU in less time than that.

Killa[DEATH]

Fri Feb 08, 2008 10:15 pm

Thank you both for your replies.

Killa, I forgot to mention I did disable the "CPU Smart Fan Control" in BIOS when this all started happening which helped a lot. It went from beeping for about 3-5 seconds to only beeping very briefly. However, it didn't go to no beep until I disabled the warning beep in BIOS.

I was never able to find any info on it before, but found this forums tonight:

http://forums.hexus.net/hexus-hardware/ ... delay.html

The guy in this forum has a similar board, and he solved it by putting the cpu fan into the pwr fan plug on the mobo instead of the cpu fan plug. Do you think this is a good idea if it works? Do I risk anything?

Sat Feb 09, 2008 12:38 am

While reading that forum thread you linked I was thinking they need to update their BIOS so that feature would be disabled when you set it to disabled. Me personally, I would feel better with the HSF in the other header and another fan in the CPU header. It seems reasonable that the fan should operate in the other header. The alarm shouldn't go off if it's reading the CPU temp for it's basis and not a fan failure. It might also be possible that if you re-enable the CPU Smart Fan Control the second fan plugged into the CPU header would never come on. It seems worth a try to me. I have no need in a silent pc so I could care less about the noise.

Killa[DEATH]

Tue Feb 12, 2008 5:52 pm

i just got my BTF90 heatsinkamajig. and it says if you get a "cpu fan error!"

go to the BIOS setup.
select "boot" then "boot settings configuration"
select "wait for 'F1' if error" and change it to disabled...

i don't know if that's what you already did but it sounds kinda different. i dunno. i have never messed with anything like this before...but that's just what the manual says. and i think we have the same motherboard.