CPU is locked at 0.40ghz plugged in and without the charger

[shwob]

I have the HP Envy x360 15-eu0005na and currently have a issue where the CPU will not move from 0.40ghz when doing any single activity, I've been surfing everywhere for a fix, tried changing the power setup options to checking CPU temps, reinstalling windows, etc. But to no avail.  I'm honestly at a standstill for what I can do now.

[Sneha_01]

Hi @shwob,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

It sounds like you're experiencing a frustrating issue with your HP Envy x360 where the CPU is locked at a very low frequency regardless of whether it's plugged in or running on battery. This kind of behavior can often be due to a few different factors. Here’s a step-by-step guide that you can try to help resolve the problem:

Check Power Settings:

• You mentioned changing power setup options, but double-check the advanced power settings in Windows. Ensure that the minimum and maximum processor state is set to 100% when plugged in.
• Access these settings by going to Control Panel -> Hardware and Sound -> Power Options -> Change plan settings -> Change advanced power settings. Then expand the "Processor power management" and adjust the settings for "Minimum processor state" and "Maximum processor state."

Update BIOS and Drivers:

• Outdated BIOS or drivers can cause performance issues. Visit the HP Support website, enter your model number, and download the latest BIOS and chipset drivers for your specific model.

Inspect for Thermal Throttling:

• Although you checked CPU temperatures, ensure that the laptop is not thermal throttling at a lower temperature than expected due to a faulty sensor or other issues. Use a tool like HWMonitor to check the temperatures and see if they spike or are reported incorrectly.

Check for Background Processes:

• Sometimes, background applications can consume excessive resources, causing the system to throttle. Open Task Manager and check if there are any processes consuming a high amount of CPU or memory resources abnormally.

Reset BIOS Settings:

• Sometimes, settings within BIOS can cause issues. Try resetting your BIOS to default settings. You can typically do this within the BIOS menu; look for an option like “Reset to default” or “Optimized defaults.”

Inspect Hardware:

• If possible, check if the issue persists in the BIOS menu itself (where the OS has not yet loaded). If the CPU frequency is still low in BIOS, it might be a hardware issue. In rare cases, the CPU or motherboard might be malfunctioning.

Windows Power Troubleshooter:

• Run the Windows Power Troubleshooter which can help fix problems related to power settings. You can find this by searching for “Troubleshoot settings” in Windows, then navigating to “Power” and running the troubleshooter.

Clean Install of Windows:

• Since you mentioned reinstalling Windows did not help, ensure it was a clean install rather than a reset or refresh. A clean install removes all old drivers and settings that might be causing issues

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571 

HP Support

[shwob]

With the solutions you mentions I have already done a few, with power settings I have already done what you've already mentioned. When I reinstalled windows it was with a fresh copy with all files removed and reinstalled. Along with the reinstall, I had all drivers reinstalled along with the bios update. Although one thing I forgot to mention is that the fans are constantly running the second I turn on the device, I think at max speed? I believe this might be due to a faulty sensor or fan issue although I'm not too sure. I've also used the hardware tests built into the bios of the laptop along with the hp assistant and its basically passed all the tests, I'm honestly lost

[Sneha_01]

Hi @shwob ,

We are sorry that the issue is not resolved when the above troubleshooting steps were performed.

This might require one-on-one interaction to fix the issue via remote assistance. 

Unfortunately, there are no further actions we can take through this channel. I recommend reaching out to our phone support for further assistance.

1. Click on this link -  https://support.hp.com/us-en

2. Select the country.

3. Enter the serial number of your device.

4. Select the country from the drop-down.

5. Click on "Show Options".

6. Fill out the web form. A case number and phone number will now populate for you.

Please feel free to contact us here anytime you need any further assistance.

Have a great day!

Rachel571 

HP Support

[turf00]

Hi Swob did you get this fixed? I have the same problem with the same model of laptop. I have already sent mine back to have the motherboard replaced by HP and the problem still occurs even with the new board.

It occurs in both Windows 11 and Ubuntu so its not related to Windows drivers, or install.

The problem exhibits at the CPU constantly being throttled to 400 Mhz despite the temperature not being high.

The only way to solve the problem for me with the CPU is throttled to 400 mhz is to shutdown the machine.

I am pretty annoyed, as I like the laptop but this makes it frequently non-useable.