Bluetooth connection with iphone yes. but not HP laptop

I used to connect my flipper to my HP laptop.
after I deleted my laptop for the flipper bluetooth connect, never connect again.

I can see when add bluetooth my laptop and asking to me the pin code.
and my flipper tell me the 6digit code and I typed in to my laptop.
Looks like connected but after 5~10sec, says “not connected”.
I have tried factory reset for my flipper twice, and restart my PC and flipper.
But still not connect.

However my flipper be able to connect to my iphone via bluetooth.
Is my PC bad?
Please advice to me.
Thank you.