HP Pavilion Gaming Laptop 15-ec0013dx CPU Cap At .40ghz when plugged in.

[Austin3421]

I have bought a handful of HP 135W chargers and none of them have worked and my CPU still caps at .40ghz but runs fine unplugged I have a Ryzen 5 3550H. If anyone knows how to fix this, please let me know, Thank You.

[Irfan_06]

Hi @Austin3421,

Welcome to HP Support Community.

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

The issue of your HP Pavilion Gaming Laptop's CPU capping at 0.40 GHz when plugged in could be related to power management, thermal management, or a potential BIOS configuration problem. Here’s how you can address it:

1. Verify Power Settings

• Go to Control Panel > Power Options.
• Ensure the selected plan (e.g., High Performance or Balanced) is configured to allow full performance when plugged in.
• Check the Processor Power Management settings in the advanced settings of the power plan and set the minimum and maximum processor states to 100%.

2. Update BIOS and Drivers

• update the BIOS for your PC by clicking on the link.

Make sure you keep only the charger plugged in while updating the BIOS for your PC.

Click on the + sign next to BIOS and then download the file.

Open the file and follow the on-screen instructions to complete the update.

• Please install all the pending updates for the Windows operating system following the below steps.

go to Start > Settings > Update & Security > Windows Update and select Check for updates. If the upgrade is available for your device and you want to proceed, download and install it.

3. Check Charger Compatibility

• Confirm that the HP 135W chargers are genuine and meet the exact specifications required by your laptop.
• If possible, test with another known compatible 135W charger from a different source to rule out charger issues.

4. BIOS Settings

• Enter the BIOS during startup (usually by pressing F10 or ESC).
• Look for power-related or performance-related settings. Ensure ECO mode or power-saving modes are disabled.
• Reset BIOS settings to default as a precaution.

5. Battery and Power Adapter Health

• Open HP Hardware Diagnostics and run a test on the battery and power adapter.
• A faulty adapter or battery could be causing the system to throttle performance to avoid damage.

6. Thermal Throttling

• Use software like HWMonitor or Core Temp to monitor CPU temperatures.
• If temperatures are unusually high, clean the laptop’s cooling system and reapply thermal paste if necessary.

7. Potential Hardware Issue

• If none of the above resolves the issue, the laptop's power delivery system or motherboard might be defective.

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

I hope this helps.

Take care and have a great day ahead!

Irwin6

HP Support