No Network Because Of NVIDIA NForce System Management Controller

NVIDIA nForce system management controller has a yellow sign on the icon.When I startup my computer, a message pops up in the task bar called Driver Installation (or something similar). It keeps loading, but then it says that it failed, and when I click on it, the driver that Windows was trying to install was:NVIDIA nForce System management controller.There is also a red X on the network tray icon on the taskbar, like this: This is not my desktop, but this is an example of how the icon looks like. ONLY the icon, as I said I can't connect nowhere, wireless doesn't detect anything, and wired network doesn't work either, and the icon with the red x is always there.