LG Nexus 5X

How to boot into bootloader mode to run fastboot commands from your PC.

1. power off the Nexus 5X.
2. holder volume down then power until you see the bootloader screen. NOTE: in bootloader mode you can also select recovery mode to factory reset the device if needed.
3. plug cable into computer to run commands
4. let fastboot drivers install
5. command to unlock the device bootloader = fastboot oem unlock

link to nexus 5X firmware from Google HERE