Kaby Lake computers with USB Type-C DisplayPort only (non-ThunderBolt) connections using WD15 or DS1000 may have blanking external video NOTE: If your computer has a third-party anti-virus software running, it is suggested that you disable the anti-virus before running DCU and ensure it is not reactivated during the update process. Uninstall the existing Intel Graphics driver from Apps & features in the Windows settings menu and selecting Intel Graphic Diver. Flash the latest Basic Input/Output PC (BIOS) available for the PC. This is posted under the " BIOS" section. Industry Standard Compatibility (Limited functionality with computers from other manufacturers) (PDF - English Only)

If only one monitor is shown, while the other is not, go to the Intel Graphics Control Panel, and under Multiple Displays, select the output for the second monitor.

Open the Intel HD Graphics Control Panel and go to the Multiple Displays control to set the display to the extended mode. NOTE: To learn more about what type of USB-C port is available on your laptop, see the specifications in the User Guide of the Dell laptop. I played some 4K video on the display while taking the 10fastfingers.com typing test on the TV, and found that performance didn't stutter at all. The video was smooth, and I managed to type at my average rate of 100 wpm with a 2 percent error rate, and experienced no lag.

Install the Intel HD Graphics Driver available for the computer. This is posted under the " Video" section. If none of the following articles resolved your issue, there is a new resolution in the following section of this article: To learn more about setting up and troubleshooting issues with multiple monitor setups, see these Dell knowledge-base articles How to Set up Multiple Monitors or How to Troubleshoot Multiple Monitor Issues The alternative is to use just one display at 4K with the HDMI cable. In this setup, we had similar experiences with typing and video watching. Flash the latest Basic Input/Output computer (BIOS) available for the computer. This is posted under the " BIOS" section.NOTE: Offers are only available for US, Canada, UK, France, Germany, and China personal computer customers. Server and Storage not applicable. Install the Intel HD Graphics Driver available for the PC. This is posted under the " Video" section.