Uno not picking up on my serial port

Ok guys I think I ******** up.

Ive read so many times dont run a servo directly from a Uno and I understand why but any case I was trying to debug a bit my external battery was flat it seems which I thought was impossible so i connected the servo to the Uno and it ran for 30 seconds or so.

The sketch I uploaded still works so the board is still running but now when i plug it in the pc it doesnt register under serial port tested my other Uno and that works.

Any advice guys please???

Many thanks
M…

Never mind guys the board got a second life all of a sudden took it 24 hours probably just wanted a holiday. ;D