Latitude 7280 - drivers for PCI data aquisition, PCI memory controller, SM Bus Controller

Hi 

My Latitude 7280 has yellow exlamation marks on the following 4 drivers: 

1. PCI data aquisition and signal processing controller,
2. PCI memory controller,
3. PCI cimple communications controller
4. SM Bus Controller

Any idea what to install to update this? According to Dell  / Intel, my drivers are up to date. 

Thanks