Surface laptop 7th & Thunderbolt 3 external display issue

Hello,

I have a surface laptop 7th under Windows 7 with the snapdragon processor offering 2 USB 4 ports. I don't manage to get my external display working through thunderbolt 3 connection.

When I go to the device controller panel, I see the serial bus constantly refreshing.

Otherwise, Windows 11 and the graphic card drivers are up to date.

Would really appreciate if someone can help me.

Thanks