I though there are only one driver available, try this already?
Installs the video graphics driver version 220.127.116.1176 for Intel® Compute Stick.
OS: Windows 8.1, 32-bit*
All Intel official drivers are available here: https://downloadcenter.intel.com/search?keyword=Intel%c2%ae+Compute+Stick+STCK1A32WFC
Drivers for Windows* Embedded may not be officially available at the Intel Download Center web site but some drivers are available
through the Windows Embedded web site as mentioned before: http://www.microsoft.com/windowsembedded/en-us/drivercatalog.aspx?fsr=1&prodcat=31&manu=19&WEItemsPerPage=10
Some drivers are not available, for instance the WiFi controller. Keep in mind this is Realtek RTL8723BS.