OMEN 17 ck1000/ck2000/cm2000 intermittent fan dysfunction

[alexbelm48]

Hello everyone,

I thought it would be a good idea to start a new post to list all of the current cases of HP Omen laptops experiencing sudden/random fan halts.

It is not caused by the fan themselves, nor it is a driver issue or an operating system dysfunction (this happens under Windows, Linux, and even in the UEFI options). It is also NOT a UEFI firmware issue, as I've faced this before. I personally suspect that this is due to the Embedded Controller dysfunctioning.

For those reading, the Embedded Controller is responsible of sharing power between the CPU (and its fan), the GPU (and its fan), the display panel and its backlight. It thus is also responsible of managing power profiles (eco mode, normal mode, and performance mode) which translates to modulating the amount of power in Watts that the CPU/GPU can consume in a time span.

Doing a hardware reset of the device does not resolve the problem, and servicing the device by HP only fixes it for a while; but the problem eventually comes back from the dead to haunt us all.

For documentation, the topics which talk about this exact problem have been listed below:

- https://h30434.www3.hp.com/t5/Gaming-Notebooks/HP-Omen-17-ck-2000-Fans-Randomly-Stop-Spinning/td-p/9...

- https://h30434.www3.hp.com/t5/Gaming-Notebooks/Laptop-fans-wont-spin-leading-to-overheating-of-lapto...

- https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Laptop-fans-stop-randomly-and-...

- https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/HP-Omen-17-Cooling-fans-stops-...

- https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Cooling-Fan-is-not-working-OME...

- https://h30434.www3.hp.com/t5/Notebook-Operating-System-and-Recovery/OMEN-17-laptop-fans-not-working...

I have listed the following laptop models which experience the bug:

- ck1000 (509V7AV) -- https://support.hp.com/us-en/document/ish_6340519-6340563-16

- ck2000/cm2000 (70X00AV) -- https://support.hp.com/us-en/document/ish_7400656-7400705-16

- ck2000nf (7K749EA)

- ck2002nr (83H02UA) 

- cm2005nt (7P6D8EA)

- ck2007ci (7Z7V5EA)

I'll keep this list updated if people report similar cases with other models.

This post was made in the hopes that HP and its engineers see and address the issue, as this hinders the use of the laptop within its full potential. As someone who owns the maxed out spec version (i9 13900HX+RTX 4090), it frustrates me to not be able to go on with my work with this frustrating problem.

I hope this will help us all find a positive outcome to all of this.

Thank you,

Alexis

[alexbelm48]

Posting here some graphs to document the issue even further:

Note: fan1 is for the CPU, fan2 is for the GPU. When happening, both fans stop anyway.

Based on what I see, it always happen right after a CPU frequency raise. IIRC, that translates to a CPU voltage increase, so I believe there's something going on with power management. I'll check if keeping the CPU to a fixed frequency does not trigger the "bug".. Consequently I'm pretty confident that this isn't related to the GPU.

[alexbelm48 · Accepted solution]

Follow-up with more graphs:

One thing that I noticed is that the PC tends to have less fan halts when it is under load vs when it is idle, which could make sense as the voltage spikes are higher under sporadic activity vs sustained workloads.

Will mark this reply as the solution for now as asked by @TzortzisG to gain visibility, but this is still an ongoing issue.

[alexbelm48]

Another thing that I've noticed is that if the fans dysfunction, clearning the UEFI NVRAM & running the HP PC Diagnostics with the fan subtests seem to reduce the frequency at which the fans stop suddenly. This is so weird.

Edit: False alarm, it still dysfunctions. I'll call HP with the error IDs that were generated by the diagnostic utility because this is getting unbearable.

[alexbelm48]

Update: now I basically can't use the laptop anymore. The fans rarely work now, and my computer has basically turned into a glorious paperweight. HP won't service the laptop locally in Canada since I bought it in France, so unless if I come back to France, I can't receive any support or servicing. Since I use it for study purposes and that I am going to stay in Canada for around a year, I am pretty much out of solutions but to buy a new laptop altogether.

I thus have decided to file a complaint to the French Consumers Affairs and Fraud Control agency (DGCCRF) to publicly request HP to do something about this.

It is not normal to let devices like this fail randomly in the wild, especially considering that the Canadian support line confirmed that my issue has already been known for a while and that numerous people have been reporting the same exact problem for many months now.

Still keeping this post updated for those interested, but let me tell you that writing this from my phone is far from enjoyable, to say the least. I am truly disappointed because I have been very patient up until this point :[

[Guarfo]

I would like HP to have a response, a sign that they are working to help us or some information about what is happening.

I live in South America, and the HP representative in my country told me they still don't have an answer.

[hey1111]

I have exactly same issue. Please share any information, if you resolve this issue.

[Gameshot]

Thank you for making this post, I hope we can get more visibility on this. I've been having this problem too. Not related to a specific BIOS update. Has been getting worse and worse to the point where my fans hardly ever turn on. It's just a very expensive paperweight now.

My issue is documented here. https://h30434.www3.hp.com/t5/Gaming-Notebooks/HP-Omen-17-ck-2000-Fans-Randomly-Stop-Spinning/m-p/94...

[Guarf]

I’ve been experimenting with a procedure that seems to improve system stability, and I’d greatly appreciate it if others could try it and share their results.

It’s possible that there’s an hardware defect, especially since many users have reported progressive failures, starting with occasional malfunctions a few times a week, then increasing to several times a day, and eventually leading to continuous problems that make the system unusable prone to overheating.

However... if it's a hardware problem it could only get worse. We know that hardware glitches can often be corrected without us even realizing it. It might be that the software layer simply fails to manage those invalid data.

The Embedded Controller (EC) is responsible for managing power, fans, and several low-level operations. From what I’ve gathered, the EC has its own firmware and stores both permanent and temporary operational values — some are basic factory defaults, while others are dynamically updated by Windows and the OEM utilities (such as Omen Gaming Hub). These values also include adaptive statistics that influence how the EC regulates fan behavior and power response based on temperature and consumption.

My hypothesis is that the EC accumulates corrupted or inconsistent values over time, which aren’t easily cleared, leading to erratic system behavior.

After testing multiple approaches, I noticed that my system always became more stable after performing a BIOS reflash followed by an EC reset. However, stability gradually degrade again after extended use.

I suspect the EC needs to recalibrate itself at every boot, but Windows Fast Startup prevents a full hardware initialization (since it’s enabled by default). Disabling Fast Startup may allow the EC to reinitialize and calibrate its parameters properly each time the system powers on — resulting in more consistent and stable behavior.

1. Disable Windows Fast Startup

• Press Start → type cmd → right-click → “Run as administrator.”

• powercfg -h off (disables both Hibernation and Fast Startup in Windows 10/11, easily reversible: powercfg -h on) 

2. Reinstall the latest BIOS

• Download and install the latest BIOS 

3. Perform a Deep EC Reset

• Shut down the laptop.

• Disconnect the AC adapter.

• Hold the power button for 30–40 seconds to discharge the board and reset the EC.

• Reconnect power and boot normally.

I went through several days unable to work in my laptop or even browse the internet. Now I’ve been working for about 40 hours and played Warzone for 7 hours, and it’s only failed once.  My biggest fear is that we’ll eventually get a firmware update, but my laptop might have already suffered permanent damage from excessive heat.

[Gameshot]

Thank you for this suggestion. Unfortunately, I cannot disable fast startup because my network drivers aren't working since I reinstalled Windows by USB. The rest of it doesn't help me either. The fans basically never turn on anymore. My laptop might just be too far gone with this issue.