www.dell.com/.../advanced
I have a Dell Inspiron n5110 right now, and only 2 usb port works. I have checked device manager and saw the "texas instrument usb root hub" has a yellow sign but after I reinstall the driver or freshly install the driver whatsoever, it still doesn't work! I recently reinstalled windows and forgot to backup those drivers. I have 2 working ones on the left side of my laptop and both works, but the one on right side does not work at all. Please help, whenever i need to use my usb drive, i have to take my mouse's usb out and use the touchpad. Any help appreciated. Thanks
Inspiron N5110, USB ports not working, install the driver