anRe: To all with M2N78-LA CPU fan constantly changing speed

[06hawkman]

Updates? Fixes besides an aftermarket fan?   Any one have a suggestion on a good replacement computer?

[Antlee81]

I just wanted to add another complaint to this thread. I have also contacted HP and was told that they are not ablt to help me at this time and that the BIOS update was done at my own risk therefore they are not liable. ***bleep you HP*** Worst customer service ever!!

[BIOSUPDATEERRRR]

Okay, everybody, Consumer Reports has a website that our situation would definitely fit in.  Their other website is called www.consumerist.com and we can tell our BIOS update problem to the world here so write your complaint.  I am also going to call my state attorney general's office to see if they can help in anyway since this affects other people with this same type computer as well.  If what Antlee81 just posted is HP's new attitude toward those of us affected, then shame on them!  That stinkin' update AUTOMATICALLY went through!!!!!!!!!  I did not download at my own risk!

[D14umom]

Everyone is right the dust have nothing to do with this problem it was the bio update. This morning i updated not knowing all the problem the updates have been causing.I went from 5.11 to the lastest for my p6214y which is the 5.22.  About a minute after the restart the fan took off very, very loud I have never had a problem with this pc until now.This is very annoying, i hate it now, all that noise is crazy and it like constantly runs.. So whoever is thinking it is because of dust, I totally disagree with that for a fact.. HP this is truly bad business why can't you come up with a fix to fixed this bug.This is wrong on so many levels.

[D14umom]

Okay, this is an update to my previous message.. I want everyone to no that I open my case and clean the dust from off my fan lo and behold when i plug everything back up the problem was gone...my pc was back to it's old self.. I don't no why it worked but it did and I am sooooo glad that I don't have to listen to all that noise anymore....So if you really haven't tried doing that you might want to give it a try for real....... I was about to go out and get the fan so i went inside to take a look at what i was working with..i spotted some dust on the fan so I said what the heck I will go ahead and get it off it won't hurt to try it...Thank the lord  I did.....woo hoo!!!!

[srjgrg]

hey what if i change my cpu fan, is this gonna help!! PLEASE REPLY ASAP Thankyou!!

[stook8954]

I tried replacing my CPU fan and that didn't fix the problem. Best Buy sent the computer away to have the motherboard replaced and I haven't had an issue since. Luckily the computer was covered under  the warranty I bought a.k.a."Geek Squad" so it didn't cost me anything. 

It looks like replacing the motherboard is the only true way to fix the issue. You can just deal with the fan issue but I know it is really annoying. 

If you know anyone who works with computers, I'd like them fix it. 

Good luck!

[mcse1234]

I have a HP motherboard M2N78-LA. My fan was always running fast when I played full screen video. It would start after about 20-30 seconds of running a full screen video. It was very loud and would run for about 50 seconds to a minute, then slow down to normal speed and a few minutes later start all over again. 

I opened my case and noticed that my onboard heatsink for the graphics chipset was extremely hot. It is located just above the processor, it's silver. I wondered if I cooled the heatsink down if that would resolve the issue.

I busted out an old computer of mine, 600mhz intel pentium, the cpu fan was about the same size as the heatsink for the graphics chipset. The motherboard doesn't have a third connector for another fan so I figured I would splice into the back case fan wiring. The small fan from the 600mhz processor had a yellow, red and black wire on it. I cut the connector off of it and stripped back about an inch of the shielding on each wire. I then shaved the wiring for the back case fan from the yellow, red and black wires, I didn't cut the wires, just shaved about 3/4 of an inch all the way around each wire. I then took the new smaller fan and wrapped the wires from it around each of the wires that I shaved from the case fan wiring matching up the colors with the correct wires. Be sure to have enough length in wiring to reach the graphics chipset heatsink. Then I took one of the screws from the 600mhz cpu fan that I removed from the old computer and screwed the fan to the graphics chipset heatsink. Be sure that the fan blows towards the heatsink, usually the holes for the screws will let you know that you have the fan in the right direction because the screw holes are a little sunk into the frame of the fan so the screw sits somewhat flush. I taped up the wires and powered up my computer, both fans run great.

To test things I went to You Tube and played some HD video and the problem is now resolved. The motherboard I have was a refurb I bought from HP because my last board failed after about 1yr 6months. It seams that the heat dispursion is not sufficient for the chipset. I'm sure HP knows about it but figures they will just ignore the fact of their faulty engineering. Last HP I buy, when it dies I'm getting something else.

Hope this helps someone.

Bob

SocialAmmo.com

[decaharms]

Thanks dbjvc for your posts about buying a new fan.  I followed your lead and did the same thing and had the same result:  works silently now without the fan reving up every few minutes.

I also found that I had dust buldup in the fins of the cooling sink, so I cleaned that out as well.

My theory is that the new Bios update simply made the temperature monitoring much more sensitive so that even the slighted elevation in temp caused the fan to speed up in order to cool down the processor.  Cleaning out the fins and adding the extra air movement with the new fan seems to now keep the processor cooler, thus keeping the fan from having to rev up the air flow.

Go back to pages 7 & 8 of this thread to find out the specifics of this fix from dbjvc.

[LegionOfAngeLs]

I was to found with this problem after updating to BIOS 5.22 ..my pc started sounding like a jet plane, it was horrendous lol...but then i thought...why not look inside the pc make sure everythings ok..i found out the heatsink had dust build up..not that bad but i guess it was enuff to make the fan go crazy...

like decaharms said maybe the new BIOS update made the temperature monitor alot more sensitive because it certanly was making this big fuzz before so anyways i cleaned up the heatsink,cleaned up the cpu fan and also applyed some thermal heat paste to the proccessor i used the silver paste works alot better and guess what?...no more fan noise..no more jetplanes landing in my room ...im a happy camper now...for those the havent tryed this...give it a shot...it worked on my side..could work on urs too