Monassas, Some of Microsoft's wireless mice and keyboards include a transceiver that allows the computer to communicate with the target peripheral via Bluetooth. ... If Windows fails to detect the transceiver or if problems occur when attempting to use the device, troubleshoot the component to determine if the hardware is faulty. Click the link below for resolving Wireless card not detected errors. Dell Wireless: Card Not Detected / Unable to Connect
The Device Manager does not show the Dell Wireless 1801 controller on my XPS 8900, only the Bluetooth controller.  Network properties shows only Ethernet and Bluetooth.  I reloaded the driver and searched for new hardware from device manager, but still nothing. Edit:  The Devices page of settings shows Microsoft Wireless Transceiver.  When I remove it, it is immediately reinstalled on reboot.  Still nothing about a wireless network adapter on device manager or on network properties.
Wireless not Detected on XPS 8900