No sound from wired headphones

I have a pair of wired headphones but i cannot hear sound when connected to front heasphone jack on my Asus pc and investigated Realtek HD Audio Manager settings but cannot see anything happen when headphones connected the front audio jacks appear greyed out and have ticked show disabled devices and show disconnected devices and no headphone icon appears anywhere in sound properties section

Previously i had a pair of Logitech desktop speakers with bass speaker which were mains powered and my headphones worked ok and now have a pair of Creative speakers which are connected to pc via Usb...could this be the problem ?

My OS is Windows 10 Pro with latest updates.

Any help would be appreciated.

Thank you

Do you have an old computer case with a ac97 front panel header? Or you enable ac97 header in the bios?

Thanks for reply Sandyt...

Sorted the problem...went back into Realtek HD Audio Manager main display and clicked the front panel Headphone jack icon and ticked on Headphone plugged option ..okay it..unchecked it..okay it...and re-ticked it...and hey presto..headphones are working.

Problem solved.