Omen 870-244 Desktop - No fan speed control

[Mystic38]

I have a new, well, refurbished 870-244 received this week.

With a desire to upgrade to an SSD based system I have successfully installed a 512GB Samsung 950 Pro m.2 nvme SSD onto the motherboard. Surprisingly, this in itself was a straightforward operation as I used the Samsung data migration software to successfully clone the HDD. The HDD is currently disconnected, and the SSD boots and operates as the C: drive .. suffice to say the speed improvement is phenomenal.

What i am now faced with is that there is no automatic control over the CPU or case fans, both of which are running at full speed, clearly an intolerable noise when the computer is at idle.

Can someone please point me to whatever driver or application is used by the system to automatically control the fan speeds or otherwise help?..

thanks, Ian

p.s. HP support assistant shows all drivers as current

[Grzwacz]

Hi

HP does not (personal experience with HP consumer systems) provide fan speed support in the BIOS.

Give the internals (fans-heatsinks) a thorough cleaning with compressed air.

Check Task Manager (Processes) to see if something is causing excess CPU or memory usage.

Download Speccy portable.

Run this program to see if you have thermal issues.

Pull the CR2032 MB battery. Let the PC sit for at least 10 minutes. Reinstall the battery.

Tom

[Mystic38]

Thanks for your reply..

This is a refurbished unit with a clean install and everything looks (mostly) brand new.. so there is no blockage or obstruction of airflow.

Yesterday I had downloaded speedfan which can at least see temperatures and they are all pretty low, and resource monitor shows minimal activity on CPU, HDD and memory..not surprising as the computer has minimal software installed and is sitting at idle, so the issue is not actual heat,  per se, but the control of the fan.

Indeed, you are correct, I had checked bios and there is no fan control at all, it simply show the fan speeds.. 4000rpm or so, indicating pretty much full speed i suspect.

This morning, after reading your post, in an attempt to revert the PC to its default state, I removed the SSD and reconnected the original HDD, and then reset the bios as you suggested using the backup battery.

Still exactly the same..  light load, low temps and high fan speeds...

ian

[Big_Dave]

Hi,

Update the BIOS on your PC.  Use the BIOS for SSID 2B4B.

Uninstall the Omen Command Center.  Now test your PC at idle.

Reinstall the OCC using this download from this Link if the above suggestions solved your fan problem.

Remove all third party fan control software.

[Mystic38]

Hi,

Thanks for the suggestion.. it may well be that the issue is perhaps associated with Omen Control? as it became unresponsive and was removed and re-installed along the way.

I made an attempt to update the bios with the SSID #2B4B you recommended, however when the "HP bios update and recovery screen" pops up, I have no option to update to the version stating "This is an older version of bios which is not compatible with your system configuration".. my system is running SSID #830C bios..

Anyay, removed OC software and rebooted and fans still high at idle...

thanks, Ian

[Big_Dave]

Hi,

According to the specifications for the Omen 870-244, the BIOS update for the Thimphu-K is for SSID 2B4B.  This information does cross reference with other information that is available from HP.

If as you claim, your BIOS SSID is 830C then your PC is running the wrong BIOS if your product number is 870-244. 

You might try doing a BIOS roll back via firmware management. Boot to the BIOS Setup menu then select F2 Diagnostics.

Your other option is to try this BIOS recovery method.

Contact HP Support for additional assistance if you can't get the correct BIOS loaded to your PC.

Double check the motherboard in your PC verses the below image.

[Mystic38]

Thanks Big_Dave for your persistence,

It seems that there is nothing particularly wrong with the bios SSID being 830C?... The thimphu-k seemingly has 4 versions of SSID , incl 830C, based upon manf date as seen in this thread.. 

https://h30434.www3.hp.com/t5/Desktop-Software-and-How-To-Questions/HP-Desktop-PCs-motherboard-speci...

So, with all windows and HP updates are done and still the fan speeds seen in the bios average 4500rpm for the CPU and 1100rpm for the system/case fan, again this is at idle so it seems that it is only the CPU fan that is running high?

appreciating your ongoing help..

ian

[Big_Dave]

Hi,

There are different releases of the motherboard.  The thimphu and the thimphu-k from what I can tell unless HP has made documentation errors.

Boot up in Safe Mode and see if the fan speed issue persists. 

Another thing to check is to be sure that the fan connectors are properly fitted and connected to the correct motherboard fan header.

_______________________________________________

BTW--I have never seen 4500 RPM CPU fan speeds regardless of what the BIOS indicates or what some claimed to have experienced and posted such on the net.

[Grzwacz]

Hi Dave

Very Nice.

You are a valuable member of this forum.

Kudos.

Tom

[Mystic38 · Accepted solution]

So.. The story so far..

Well, every path for the bios and software has been addressed.. from removing the backup battery and reset to "as shipped  default", to fully updating all bios and drivers as recommended by the HP support software and its the same.. the CPU fan speed is about 4000rpm, as reported by the bios anyway.

Given that this is stock, as shipped default configuration, it lead me to the conclusion that in fact, the mobo & bios is likely operating correctly from a firmware perspective... leaving one of three things to be at fault.. either

a) cpu core temps not being read correctly, or

b) pwm controller on mobo fkd, or

c) fan not operating correctly.

So as with either a) or b) i would be toast as they are on the mobo,  i worked on c)..the fan. 

I had already, a couple of days ago, removed and refitted the PWM connector to the mobo with no joy.. all the same, so given the low cost, I ordered a new PWM fan on Friday which arrived yesterday Sunday.)... its unfortunately the wrong size (my bad..90mm vs 80mm) but anyway on experiment I plugged it into the CPU PWM connector on the mobo and voila.. problem is solved... a whisper quiet system.

So this morning i re-inserted the M.2 drive and all is (still) ok, so just now waiting for the correct fan to arrive and i should be all set...

Thanks to you both for your thoughts and helping me keep my sanity...

ian