Hi,
What is the model of your Samsung laptop?
If you don't know, you can check in the search bar by typing msinfo32.exe, open it, take a screenshot and post it here.
Do you have any third-party antivirus software?
On your laptop keyboard, is there an icon for mute microphone? If so, press it. If that doesn't work, press it using the FN key along with the unmute key; it's usually located between F1 and F12.
Access the Start menu > Settings > System > Sound > Sound Control Panel > Input > select Microphone Properties > Levels > check if it's muted.
If that doesn't work, check if it's picking up sound by accessing the Start menu > Settings > System > Sound > Sound Control Panel > Input > select Microphone Properties > Listen > check the Listen to this device option and see if any sound comes out.
Thanks