UNO not showing up

hello.
i have a problem with my arduino uno.
i connected it with an A B usb cable to my windows 10 pc.
the lights went on, it did the connect sound and then, nothing.
it does not show up in the ports section.
i tried following the instructions here but got no results.
can you help me?
thanks.
Roy.

Ensure you have nothing connected to pins 0 & 1.

Try use a USB 2.0 port not USB 3.0.

Does any other item in DEVICE MANAGER show up with any sort of warning ?

Is it a clone or a true Arduino ?

Do you have the IDE installed (CREATE or the DESKTOP version) ?

Can you see COM & LPT ports in your device manager ?