I have a new Dell XPS 17 laptop and have an issue that the two USB SS ports on the rear of the machine are not recognising anything when I start-up. Have tried mouse, keyboard, headset, USB display.

If I plug a USB hub in the power light on the hub lights (presume this is hard-wired) but a mouse plugged into the hub does not light up.

If I restart the pc the ports work fine. Also the other two USB ports work fine all the time.

I have switched off the power saving setting on the device manager (Power management>Allow the computer to turn off this device to save power) and also in the advanced power settings (USB Settings> USB Selective suspend setting:disabled)

I have also disabled USB powershare in the BIOS (not sure what this actually does!)

This is becoming very annoying having to restart the machine every day before I can start work

Running Win 7 Pro x64

EDIT:

I have found that setting USB Emulation to Disabled has helped the devices to be recognised during start up but they keep dropping out completely when in use

EDIT 2:

I contacted Dell about this issue who told me to update the BIOS driver, when I asked if I should downgrade from the factory installed A13 to the A12 posted on the dell website they said no. However there is now an A14 available on the website has anyone tried this?