CPU is throttling when on charging

[ihza1]

My laptop is getting slower when I plugged in AC adapter. I have tried everything on internet that mentioned about. Like downgrade or upgrade the bios, change power plan, use Throttlestop to undervolted and anything else (BD Prochot, tdp, etc). But still nothing changes about. Let's check out the image i provide with. 

I did a stress test here with unplugged ac adapter, it seems normal. But when i am testing it with plugged ac. 

It just preventing from getting hotter and getting more clock speed. And as you can see the tdp is much smaller than the unplugged one. Can someone help me? thank you

[Nal_NR]

Hi @ihza1,

Welcome to the HP Support Community. 

I'd like to help!

Fabulous analysis. Spectacular diagnosis of the issue before posting. Kudos to you for that. You've done a remarkable job performing the steps. 

This situation will need additional support from our internal teams in HP as it may need service. For that to happen, we will give you additional instructions/information via Private Message.

Please check your inbox on the forums page for private message.

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

[ihza1]

Thanks for responding to my post. I tried to charge with my friend's ac adapter that have 200W (mine 150W). It looks no having issue with it. Could be the ac adapter issues right? Or something else? Cause i want to buy it from online store if it is related to charger issues.

[sandytechy20]

@ihza1 

This might require one on one interaction to fix the issue, I am sending you a private message with the steps to talk to HP support.

Please check the mailbox icon at the top-right corner of this screen.

I hope this helps resolve this issue completely.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers