Colour Settings are greyed out when source is a PC

[akhttp]

My TV model is UA43N5300AS, the other day i connected it to my PC via HDMI, and i found the colors to be too vivid and unrealistic, i went to Settings > Picture > Expert Settings, but the Colour and Tint options are greyed out, but they are available when source is TV, is there a way that i can make them available or adjust the Colours? i tried to mess with the White Balance but it didn't help

[Josephgeorge]

Quick and effective, thank you.

[Cece9]

This was a HUGE help!  Thank you for sharing! ⭐️⭐️⭐️⭐️⭐️

[J_Walker]

In an older Hospitality TV, Just going in Windows options and changing the refresh rate from 59,740 to 59,980 or 60hz , fixed the problem for me. Hope works for Someone Reading this. That frequency is incompatibile