I had the same issue a few days ago.
A friend here helped me out.
It showed up by long press the button on the back of the airpods box till it flashes white.
This way the laptop could see it and pair it.
Sorry I couldn’t find the thread ( on mobile phone now)!
I will try find it and post the thread soon.
EDIT: found the link Bluetooth Detected Some Devices But Not iPhone earpods!
I hope this helps.