Low cpu clock when ac charger plugged in

[IrrelevantQB]

I’ve had my laptop for about 8 months and the problems started about 2-3 months ago whenever I charge my laptop the cpu stays at 0.4 ghz. When I take the charger out it returns to normal. I have tried changing my power options but it has not worked.

[Riddle_Decipher]

@IrrelevantQB In Windows 10, go to Device Manager, find the section titled Firmware, expand it and right click "System Firmware" then click "Update Drivers" select "Search Automatically Online" and let Windows do it's thing, it will take a couple of minutes, it should update the firmware of the machine.

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[IrrelevantQB]

It says I have the best drivers

[Riddle_Decipher]

@IrrelevantQB In that case, I suggest you create a new user account to check if that helps, and run a hardware test to identify if this is a hardware malfunction:

Install the latest version of the HP Hardware diagnostics (UEFI) on your device using this link: Click here for details

• Hold the power button for at least five seconds to turn off the computer.
• Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
• On the HP PC Hardware Diagnostics (UEFI) main menu, click System Tests.
• Click Extensive Test.
• Click Run once, or Loop until error.
• While the test is running, the time remaining and test result for each component display on the screen.

If a component fails a test, write down the failure ID (24-digit code) for when you respond back to us.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.