Spectre x360 - CPU running SLOW SPEED at 0.39 GHz when plugged in and charging

[Lloyd-]

I have HP Spectre x360 13-4102TU 13.3" Notebook

Unplugged the computer runs amazing, with clocks of 2.5Ghz etc but the moment I plug the laptop in and charge the Clock rate drops to 0.39Ghz, The CPU utilization will only go to 15% max (but can go lower).

Although the battery charges very quickly, the computer runs terribly slow until the power is unplugged. This issue is present regardless of the battery percentage.  I tried updating the bios to f.54, which didn't fix the issue. Windows power options are all set to default.

This seems like a Bios issue but the latest version doesn't resolve the issue.

Any assistance is appreciated. Thanks.

Product name: HP Spectre x360 Convertible
Product number: N8L41PA#ABG
BIOS: F.54-12/27/2019
Keyboard revision: 33.79
Total memory: 8.00 GB
Processor name: Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz

OS: Win10 (64 bit) Home

[Betty0610]

@Lloyd-

Welcome to the HP Support Community.

Let's update the BIOS: https://support.hp.com/in-en/document/c00042629

And the chipset driver: https://support.hp.com/in-en/drivers/selfservice/swdetails/hp-spectre-13-4100-x360-convertible-pc/84...

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the "Accept as solution" button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[Lloyd-]

Hi Betty,

Thank you for your prompt reply.

Bios is latest version BIOS:F.54-12/27/2019

Updated Intel Management Engine Interface (MEI) Driver (Windows 10 v1803) - 11.7.0.1057 Rev.B

Unfortunately, this did not resolve the issue - still running at 0.39 GHz (15%) when plugged in.

Please instruct further action.

Thanks...

[Betty0610]

Let's run the hard drive, memory and battery tests:

Restart the unit>>immediately keep tapping on the F2 key>>Hard drive>>Quick/fast test.

Or Restart the unit>>immediately keep tapping on the F2 key>>Component test>>Hard drive>>Quick/fast test.

The same for memory and battery as well.

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.

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the "Accept as solution" button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[Lloyd-]

Hi Betty,

Successfully performed hard drive Quick Test, memory and battery with no errors detected. I have also replaced the power pack, still have the same issue with CPU running at 0.39Ghz (15% utilization) when plugged in.

This is definitely a software or firmware issue, throttling the CPU and GPU when charge is detected. The result is faster battery charge due to controlled low system power consumption.

Further assistance required.

Thanks

[Betty0610]

Go to Control Panel > Power Options > Chose What the Power Button Does > at the top, click "Change settings that are currently unavailable", under Shutdown Settings, uncheck "Turn on fast startup"

Then shutdown and then start your PC.

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the "Accept as solution" button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[Lloyd-]

Hi Betty,

Unfortunately,  didn't resolve the issue.

Performance - Battery ONLY

Performance when PLUGGED IN

The performance is very slow and hinders normal use.

Any other suggestions?

[Betty0610]

Let's try a reset: https://support.hp.com/in-en/document/c00006110

If the information I've provided was helpful, give us some reinforcement by clicking the "Accept as solution" button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[Betty0610]

I recommend you to contact the HP Support Team regarding this.

Link: www.hp.com/contacthp/

Note:  Select the country accordingly to get the contact details for support.

If the information I've provided was helpful, give us some reinforcement by clicking the "Accept as solution" button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!