If you have recently installed (or reinstalled) Windows 8 or Windows 8.1 on a desktop or laptop computer, you may have noticed an unknown device listed under "Other Devices" labeled simply as This dreaded yellow triangle indicates that Windows does not have the correct driver software for a critical piece of hardware on your motherboard.
You likely need the Intel Trusted Execution Engine (TXE) or Intel Management Engine (ME) driver. download pci encryption decryption controller windows 8
