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Main => Main Forum => Topic started by: clutch on February 14, 2011, 06:52:30 pm

Title: pc cooling fan question
Post by: clutch on February 14, 2011, 06:52:30 pm
I pulled the m'board out, but now if I don't connect the cooling fan, I have to hit F2 to continue.  Has anyone ever cobbled a plug together to trick the m'board into thinking a fan is there?

I can't disable the warning in bios either...


Edit: I think I am outta luck because it monitors the RPM's of the fan.  I'll just get one on fleaBay and let it just blow air.
Title: Re: pc cooling fan question
Post by: DJ_Izumi on February 14, 2011, 07:02:03 pm
Please tell me that this isn't the CPU fan...
Title: Re: pc cooling fan question
Post by: clutch on February 14, 2011, 07:04:29 pm
Lol!  Nah, just the big fan in the back of the case.  It just ticks me off that HP thinks it knows better than I do and that I NEED a fan hooked up at all times.
Title: Re: pc cooling fan question
Post by: DJ_Izumi on February 14, 2011, 07:08:14 pm
I'm sorry, I just couldn't imagine a system where the mobo powered more than the CPU or CHipset fan.  Usually the actual case fans are just powered 'dumbly' off the 12v rails of the PSU.
Title: Re: pc cooling fan question
Post by: lilshawn on February 14, 2011, 07:26:11 pm
you could just hijack the yellow wire off the CPU fan.

just add a wire on the yellow and run it over to to an old fan header plug. then just plug it onto the header. you might need a ground too, but not likely.

it should then read the same RPM for both the CPU and the chassis fans.
Title: Re: pc cooling fan question
Post by: SavannahLion on February 14, 2011, 08:10:26 pm
I'm sorry, I just couldn't imagine a system where the mobo powered more than the CPU or CHipset fan.  Usually the actual case fans are just powered 'dumbly' off the 12v rails of the PSU.

It's been a while but I believe the ATX specifications call for a case fan header on the motherboard. Every ATX board I own has at least one case fan header, some sport two or even three.

TBH, it irritates the bejesus out of me when I hop to the store and nearly all the fans have those crappy hybrid molex wiring. I got more use out of the Molex adapters.

I'm a strong believer that a computer should be more aware of its environment.12v Molex fans don't serve that purpose well.
Title: Re: pc cooling fan question
Post by: gryhnd on February 15, 2011, 10:56:39 am
Did you check the BIOS for any options to either ignore the fans, or not to halt on an error?
Title: Re: pc cooling fan question
Post by: SavannahLion on February 15, 2011, 12:07:20 pm
IIRC HP BIOS suck. They don't give you crap to control. Hopefully he'll have one of the standard BIOS.
Title: Re: pc cooling fan question
Post by: clutch on February 15, 2011, 04:00:26 pm
Yes, it is a locked bios. 
Title: Re: pc cooling fan question
Post by: gryhnd on February 15, 2011, 04:22:18 pm
Yes, it is a locked bios. 

Ya, sorry...didn't see where you said that up above till just now.  :dunno

Any reason you can't just mount the fan off to the side somewhere? As long as it spins...
Title: Re: pc cooling fan question
Post by: DJ_Izumi on February 15, 2011, 08:19:12 pm
I'm a strong believer that a computer should be more aware of its environment.12v Molex fans don't serve that purpose well.

I don't see a huge need in the PC to know how fast it's larger case fans are going.  So long as it knows it's vital CPU and chipset fans are operational.

That said, my desktop, it doesn't even have EDID communication with the 24" monitor.  I had to manually tell it what resolutions the monitor supported. :D
Title: Re: pc cooling fan question
Post by: SavannahLion on February 15, 2011, 10:01:42 pm
I'm a strong believer that a computer should be more aware of its environment.12v Molex fans don't serve that purpose well.

I don't see a huge need in the PC to know how fast it's larger case fans are going.  So long as it knows it's vital CPU and chipset fans are operational.

It's not how fast a particular fan is going per se (though that has its particular uses), it's more important for the PC to be aware the fans are actually functioning. I have a BH6 with melted standoffs because the 12v case fan seized and I had absolutely no idea that happened. I also have a TNT card with melted chips (though the iron horse is still perfectly functional) because the 12v internal fan circulating air failed. I could go on and on with the horror stories when a fan failed and none of the fail safes kicked in.

One another note. Why not? The functionality is there, one should take full advantage of what it offers (though I also believe in having full flexibility in not having said fan if the need should arise).

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That said, my desktop, it doesn't even have EDID communication with the 24" monitor.  I had to manually tell it what resolutions the monitor supported. :D

I can top that, I have a PC that is completely headless. ;D

Which reminds me, I have to find the rest of the case.