If you haven't already, install the Intel Chipset Device Software. Then reboot and run Windows Update, which may install the other needed drivers. If they aren't automatically installed, then here is the Intel Integrated Sensor Hub Driver.  Other drivers for your system are found on the Dell Support page for Inspiron 17 7779 2-in-1.
Hi. After running the SupportAssist test, I got a PCI device and bus failure. After searching around for the issue, I found that it is the Intel Integrated Sensor driver that is either corrupt or not the correct one. This is the detailed information: PCI\VEN_8086&DEV_9D35&SUBSYS_07441028&REV_21. Could anyone help me download this driver from the Dell or Intel websites?”  
Need to download Intel integrated sensor for Inspiron 17-7779 2 in 1