How do i get a yellow exclamation mark off of my universal serial bus controler please?
When you say yellow exclamation mark on our universal serial bus controller I assume you mean in the Device Manager if so the mark is showing a problem some where it could be as simple as a driver not installed properly click on + to drop down the list you should then have an idea which device is causing the problem then reinstall the driver for it by right clicking on it and clicking update driver
