Did you try reinstalling your chip-set drivers? If you did and it didn't help try deleting/uninstalling all those devices with the yellow !. Then see if they get re-detected on a reboot. Power down your cable/dsl modem, router and PC. Then power up the modem and let it run for a minute or two. Then power up your router and let it run for a minute or two, then power up your PC and see if you get internet.