Laptop making a hissing sound when charger is plugged into it.

[lou5656]

My Envy 17T is making a hissing sound when the charger is plugged in. I have tried using a new charger and it still makes the noise. Speaker volume does not change the sound at all.Will this require a new motherboard?

[Jeet_singh]

@lou5656,

Thank you for showing your interest in HP Support Forums. It is a great place to find the help you need, from other users, HP experts, and other support personnel. I see from your post that you are having issues with the hissing noise coming from the laptop when charger plugged in. Don't worry we'll work together to help you find a solution.

To provide you with an accurate solution, I'll need a few more details:

Have you recently made any changes on the PC before the issue started?

Do you hear the hissing noise when headphone connected? 

Do you hear the hissing noise only when charger plugged in?

Did you try to update the Bios?

This looks like a possible hardware failure with the PC, however, I would suggest you try these steps here: 

I would suggest here is to update the Bios on your PC from our HP support website, using this link.

Also, download and install HP support assistant on your PC. It should automatically download and install the latest updates and drivers for your PC.

Refer this link to know how to use HP support assistant.

Next thing, I would suggest here is to Run a system diagnostics test from F2(Please capture the failure ID for further assistance).

Could you please respond to this post with the details and with the results of the troubleshooting as this will help me in further assisting you.

Eagerly waiting for your response!

that said, If the information I've provided was helpful, 

give us some reinforcement by clicking the solution and kudos buttons, 

that'll help us and others see that we've got the answers!

Good Luck.

[lou5656]

Hello,

Thank you for the quick response. Here are the answers to your questions.

Have you recently made any changes on the PC before the issue started?  I have not made any changes.

Do you hear the hissing noise when headphone connected?  Hissing does not have to do with my audio. Can have audio levels muted or all the way up and makes no difference to the hissing..

Do you hear the hissing noise only when charger plugged in? Hissing is only present when the charger is plugged in.

Did you try to update the Bios? I updated the bios and it made no difference.

[Jeet_singh]

@lou5656,

Thank you for the update,

After reviewing your post thoroughly, I see that this looks like a possible hardware failure.

In this scenario, I will share you a private message with details. Please watch your inbox for more information.

Let me know if this helps!

Have a great day ahead! 🙂