Good Day LataKapoor,
My name is Carlo, I am also using Windows 11 pc and community member like you. Let us work together to sort this out.
First, try to connect the Bluetooth headphones using a different device for us to check if the issue is with the computer or the Bluetooth headphones itself.
If it does the same using a different computer or device means that the Bluetooth headphones is faulty.
If the Bluetooth headphones works using a different device proceed with the steps below.
-Go to Settings
-Click System
-Click Troubleshoot then “additional troubleshooter
-Look for Bluetooth , click it and run the troubleshooter.
Once done proceed with these steps.
-Press Windows Key + R
-Type Services.msc and hit enter
-Look for "Bluetooth Support Service"
-Set it to start then Automatic.
-Go to Device Manager
-Expand the Bluetooth
-Look for Bluetooth driver that was installed
-Right click and Update
-Look for "Browse my computer for driver
-Let me pick drivers available drivers
-Choose an old driver and use it.
Restart your device, then check the Bluetooth headphone
if issue persist, let's download and install the Bluetooth
What is the exact model of your computer for me to check.
To check the system model proceed with these steps.
-Press Windows key + R
-Type msinfo32 and hit enter.
-Look for the System Model and manufacturer and post it here.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.