Arduino UNO installs then disconnects

I use win10 64bit

Hi guys, recently i bought the arduino UNO for a school project BUT as the title says when i plug it in it downloads the Arduino UNO and then disconnects.

Under device manager if i press "Show hidden" I can see that COM3 is called Arduino UNO so yes it is installed. But how do i stop it from disconnecting? I've already tried to update the USB drivers and USB ports (if i did it right) and I've also tried to switch ports nothing is working....

Soooooo any suggestions?

Also under device manager it says code 45 just in case that helps.