Sound not working on a windows 10 laptop - Red x mark on the speaker icon

On the same laptop go to this Dell link and scroll down to download file
ref link:  https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=gft2d

Save the file somewhere on your laptop and then run it when the download is complete

you didn't perchance hit the hotkey combination to disable audio did you? Fn + Mute Activates Mute

No  , i didn't hit the hot key.
I also tried enabling and disabling again.. but no joy

I will install the drivers now and post the results .

Have you rebooted? Can you update drivers?

You can try:
Settings -> System -> Sound -> make sure that the correct output device is selected
Settings -> System -> Sound -> on the left click on Sound Control panel -> Playback tab -> Properties -> Device usage -> make sure it's enabled
Settings -> System -> Sound -> scroll down to "Advanced sound options" and click on "App volume and device preferences" -> check Master and App volume. You can also reset it to defaults.
Settings -> System -> Sound -> Troubleshoot

I did install the drivers - No joy

Settings -> System -> Sound -> scroll down to "Advanced sound options" and click on "App volume and device preferences" -> check Master and App volume. You can also reset it to defaults. - No Joy

Will there be any hardware fault?

Even i plug in my ear phone , the speaker icon is x red.

What about other suggestions? Have you run a troubleshooter? Have you rebooted?

Can you log in as a different user?

Run in CMD:

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

Select allOpen in new window

I tried logging as a different user.

I will try the following now

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

The solutions didnt work unfortunately.

Have you run a troubleshooter? Have you rebooted? Have you tried Safe Mode?

Windows updates have been horrible for bugs.  I'd check to see if you received any recent updates, and if so, uninstall them and see if that makes any difference.

Please open up device manager
1. Right-Click the device>Uninstall>also put a check in DELETE THE DRIVER SOFTWARE FOR THIS DEVICE
2. Reboot to see if Windows automatically reinstalls, if not install the drivers you downloaded

Tried the above solution as well  and didn't work. After re-imaging the laptop the sound is working.

Thanks

Fair enough

Thanks for your help guys..