8710w - fan works all the time - SOLVED

Regarding this thread:
http://forum.notebookreview.com/hp-compaq/253102-8710w-fan-works-all-time.html

This is due to error in DSDT table.

Check large gap between "fan speed up" temperatures - red line, and "fan speed down" temperatures - blue line:
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Corrected temps are shown here:
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And how to slow down your fan?

1. Run CPUID HWmonitor and see GPU temp TZ2_ and fan speed percentage TZ5_

2. Then Merge this corrected reg file for 8710w, BIOS F.20, W7 64bit Ultimate:
http://download.hellshare.sk/nc65xx-fan-patch-01-rar/6263784/

3. Reboot

4. Run CPUID HWmonitor, see temps, hear the fan and let me know.

 

Hi thanks for this but the reg file is impossible to download for me...
Could you send it another way than HELLSHARE ?
Thanks.

 

Contrary to the OP's post, you may want to avoid the F.20 bios if want the modded SLIC 2.1, no-whitelist and dual-IDA functionality of the previous F.0F release here. HP have set a trap so can't flash back to the older version to get that functionality, plus they've increased the bios revision so as to make it look like it's a lot newer than previous versions. Crafty.

 

Links for patch file:
http://depositfiles.com/files/ihhrvf6p1
http://share-rapid.com/stahuj/r4zvet86

 

Thank you for the new link.
But, for the fan, nothing's changed...

 

Please let me know your GPU temp TZ2_ and appropriate fan speed percentage TZ5_ values. My TZ2_ is about 53 Celsius and TZ5_ is 30 precent.

Which version of BIOS and Windows do you use?
If you run Regedit, do you see folder HKEY_LOCAL_MACHINE\HARDWARE\ACPI\DSDT\HP____\nc65xx\ or something else?

 

Hi, thank you again,
CPUID says :
Temperature 0 51°C (123°F) [0xCAA] (TZ2_)
Temperature 3 70°C (158°F) [0xD68] (TZ5_)
(I don't know how read this..)

I'm using windows 7 64 Ultimate with a F.20 bios on a 8710w with a core 2 duo T7700 cpu and nvidia quadro fx 1600m.
My laptop worked fine with the f.0E bios...

 

At first, TZ5_ is not temperature but actual fan speed percentage. 30 is silent, 50 little noisy, 70 and above like vacuum cleaner.

After install W7, drivers and nVidia driver, you have to do this:
How to Reduce Fan Noise on HP Notebooks: Patching the DSDT table
But do steps 1 to 8 only.

Then open dsdt.ASL in editor, show line numbers and change values as follows:
line 13315 0x5ac,
line 13316 0xc6e,
line 13317 0xcbe,
line 13318 0xd04,
line 13319 0xd5e,
line 13320 0xdb8,
line 13321 0xe1c,
line 13322 0xe6c

line 13326 0xc6e,
line 13327 0xcf0,
line 13328 0xd36,
line 13329 0xd90,
line 13330 0xdea,
line 13331 0xe4e,
line 13332 0xe94,
line 13333 0xfa3

Continue with steps 13, 14 and 15.

 

Thanks again,
I've done this.
The equus.exe link has been hard to find (i've found the version 0.01 alpha)
but Fan still works all the time...
I'll retry this tomorow...

 

When you compile dsdt.asl back to dsdt.aml (step 14) you can ignore the warnings, but if you get errors, go back and check your syntax. If you get "error: expecting Symbol '('" the number in the brackets is the line number, go to that line in dsdt.asl and add a pair of bracket () to the end of the previous line, I had to repeat this 3 times before it will compile:
line 14087 C381()
line 14781 \_TZ_.C381()
line 14871 \_TZ_.C381()

 

Wonderful, it seems to work!!
I'll test it longer tomorrow and write you back,
Thanks a lot.

 

Hi,
I took time to check my system.
It works nice except when I plug my other screen to expand my desktop...but I don't know if it's a new problem because my second screen is new (If you have an idea about that...).
So, thanks a lot for all.

 

What is the problem with your secondary display?

 

When I work with my secondary display, when the fan begins to work (5 minutes), it doesn't stop...

 

You have to check relations between TZ_2 temperature and TZ_5 fan speed.

Your new DSDT table controls fan speed as follows:

When GPU temp raises:
above 45 Celsius = 30% fan speed
above 58 Celsius = 50% fan speed
above 65 Celsius = 70% fan speed
above 74 Celsius = 85% fan speed
above 83 Celsius = 100% fan speed

When GPU temp decreases:
bellow 78 Celsius = 85% fan speed
bellow 69 Celsius = 70% fan speed
bellow 60 Celsius = 50% fan speed
bellow 53 Celsius = 30% fan speed
bellow 45 Celsius = 0% fan speed

Simply, if your GPU is hot, the fan runs faster. I will check my extended desktop and GPU temperature and write you back.

 

My primary display works with 1920x1200, extended desktop at secondary display 1280x1024. TZ2_ is 58 Celsius and TZ5_ is 50%.

 

Excuse me but I don't where to find that in HWmonitor ?

 

Run HWmonitor as Administrator and you can see it.
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I also had similar problem on 8710p

The only bios which works fine without this issue is F.0E, they updated something in F.0F (changelog says updating microcode) and ed it up ..

So I'm on F.0E it works fine.

 

Unfortunately I'm on the F.20 bios, so I can't downgrade the bios.

When the fan doesn't stop, with the second display plugged via HDMI (1920/1080), Hwmonitor says :
http://dl.dropbox.com/u/716456/cpuid 8710w.JPG

 

Hi,

I have same problem with my 8710w and F.20 BIOS.
I upgraded it yesterday from f.0B to F.20 BIOS, and now fan is always working on.
Could you share with me "equus.exe" file ?

My configuration:
OS Windows 7 64 Ultimate
CPU Core 2 duo T7700
nvidia quadro fx 1600m


Cheers

 

I have the same configuration and, except with my second display, it works fine.
Equus : Free - Envoyez vos documents

 

@tiptaptop
Thank you for equus application.

@msk_sk
Thank you for this great guide!

I had just few errors while compiling dsdt.asl, which was due to expecting symbol '('".

Below is my situation; BEFORE changing data: TZ5_ varies between 50-70


and AFTER changing:


It is really quiet now, but it seems a little warmer then before new BIOS F.20
It could be useful if anyone have original dsdt.ASL parameters from BIOS F.0B, just to compare.

If I understand it well, I need to run "asl /loadtable dsdt.aml" after every fresh windows installation. Am I right?
Is there any way to change data permanently?

 

nbruser and nando4

Could you export and post your regedit file:
HKEY_LOCAL_MACHINE\HARDWARE\ACPI\DSDT\HP____\nc65xx\00010000
And let us know, which version of BIOS do you have.

Then I extract and post the right DSDT temperatures for all of us.

 

Hi msk sk,
I don't know if it's about my reg file, but there' mine :
Free - Envoyez vos documents
I'm on F.20 BIOS

 

Sorry there's a mistake this is the good link : Free - Envoyez vos documents

 

Can´t download from dl.free.fr. Please upload elsewhere or send me reg file at [email protected]

 

Thank you user tiptaptop for reg file.
But we need reg file from 8710w using other (lower) BIOS version than F.20

 

Hi, msk_sk,

I have attached the reg file from my HP 8710W with F.0E bios. I hope you can provide us the right temperatures. Best regards!

 

A reminder to anyone reading these fan issue threads... if this has been an issue with your laptop for more than a couple of years I highly recommend checking for lint buildup in the fan and fan enclosure.

My 8510w had always had a fan that seemed to work overtime but it eventually reached a point, after about two years, where it just ran constantly and temps seemed to be increasing. Since the fan runs on this machine more than is considered normal for most laptops it was accumulating dust/lint far more quickly than would be expected as a result. And I do not work in especially dirty or dusty environments.

I simply put a toothpick in the fan blades to keep them from rotating (spinning too fast) and applied light vacuum from a vacuum cleaner pulling in reverse of normal flow. An astonishing amount (seriously) of plugged up lint emerged and I had to remove it with tweezers through the fan grille and reapply the vacuum a couple more times to clean it thoroughly.

Huge improvement.

 

sorry it took too long..

here it is dsdt_hp.reg

I'm on F.0E and my laptop is 8710p, but its almost the same as 8710w.

 

Could someone please reshare "equus.exe" file ?

Thanks :thumbsup:

 

well, from what i know you can't go back to previous bios because new BIOS (F.20) is RSA encrypted and you can't just simply re-flash old BIOS.

you can do this with a programmator.