37 Replacing the system board....................................................................................................................... 60Procedure......................................................................................................................................................................... 60Post-requisites.................................................................................................................................................................. 6138 Removing the palm-rest and keyboard assembly....................................................................................... 62Prerequisites..................................................................................................................................................................... 62Procedure..........................................................................................................................................................................6239 Replacing the palm-rest and keyboard assembly........................................................................................64Procedure..........................................................................................................................................................................64Post-requisites..................................................................................................................................................................6440 Device drivers............................................................................................................................................65Intel Chipset Software Installation Utility...................................................................................................................... 65Video drivers.....................................................................................................................................................................65Intel Serial IO driver......................................................................................................................................................... 65Intel Trusted Execution Engine Interface...................................................................................................................... 65Intel Virtual Button driver................................................................................................................................................65Wireless and Bluetooth drivers.......................................................................................................................................6541 System setup............................................................................................................................................. 66Boot Sequence.................................................................................................................................................................66Navigation keys................................................................................................................................................................ 66BIOS overview..................................................................................................................................................................66Entering BIOS setup program.........................................................................................................................................67System setup options...................................................................................................................................................... 67Clearing CMOS settings..................................................................................................................................................72Clearing BIOS (System Setup) and System passwords.............................................................................................. 7242 Troubleshooting......................................................................................................................................... 73Flashing the BIOS.............................................................................................................................................................73Flashing BIOS (USB key)................................................................................................................................................ 73Enhanced Pre-Boot System Assessment (ePSA) diagnostics................................................................................... 73Running the ePSA diagnostics..................................................................................................................................74Diagnostics........................................................................................................................................................................74Enabling Intel Optane memory....................................................................................................................................... 75Disabling Intel Optane memory.......................................................................................................................................75WiFi power cycle.............................................................................................................................................................. 75Flea power release........................................................................................................................................................... 766 Contents