Noise in the headphones connected to my laptop

[Anyway]

Headphones are connected via bluetooth (jbl t450bt).

When connected to my phone, the sound is great. When it's my laptop, there's noise - even when there's nothing being played at the moment. 

The sound is terrible - echoing, with strange noises like it's cracking. 

Help pls

[Jeet_singh]

@Anyway,

Thank you for posting your query on HP Support Community,

Let's try these steps here: 

I  would suggest here is to run the audio test from the F2 (Please remember to capture the failure ID for further assistance).

• Hold the power button for at least five seconds to turn off the computer.

• Turn on the computer and immediately press the F2 key repeatedly, about once every second.

• The HP PC Hardware Diagnostics (UEFI) main menu is displayed.

• Select Component tests.

• Please initiate a test on the Audio - The Audio Playback Test checks your system to make sure the audio device is functioning properly. During the test, a few music notes are played in sequence and then repeated. This test takes 1 minute to complete. Click Audio, then click Run once. Choose either the speakers or the headphones. When asked, enter the number of notes you heard.

If the audio test passes then the evidence indicates towards a software issue.

Right-Click on start button> click device manager> expand sound video and game controllers>then select the sound drivers and right-click on it and uninstall the audio drivers.

Then check the box delete the software for this device.

Restart the computer and then update the Bios, Chipset and audio drivers 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.

Once done, restart the computer.

Please let me know if this resolves the issue, or if you require further assistance!

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

Have a great day!