My system: Dell XPS 27 (7760)
Bios: 2.02 (Latest available)
OS: Windows 10 Home
PCI Bridge Driver: 10.1.1.18 (dated 4/4/16)
The system event log reports that a previous shutdown was unexpected, however I did power off the system normally. When I turn the PC back on it indicates that the PCI bridge was removed and reinstalled. This happens frequently and updating my Bios does not fix it.
Support Assist also claims that updates are available for the Intel Chipset management engine (22.214.171.1247, A01), but this is already installed. Uninstalling it and reinstalling it does nothing.
I updated the Intel drivers since the drivers on the Dell website are not the latest. Will test over the next few days to see if this solves the problem. I have seen from different threads that the Support Assist often instructs users to install older drivers, or drivers that may have already been installed.