I only tested this to work on a Lenovo Yoga 730-15IWL and a Yoga 730-13IKB. I discovered this by accident. It allows you to disable CPU MSR lock, disable BIOS lock, disable Flash Protection Range Registers (allows Intel FPT to flash your BIOS) and enable SPD flash write, among many other options that I have not yet explored. Disabling these options allow me to flash a modded BIOS using Intel Flash Programming Tool within Windows (without having to use a HW programmer). Here's how I entered the advanced mode: 1. Turn off the computer fully (not fast shutdown). Wait 1 minute. 2. Insert a USB flash drive (may need to be formatted NTFS and/or bootable to work). 3. Press the power button to turn on. 4. Press the F2 key FIVE times quickly (wait 1 second). 5. Advanced BIOS menu should appear. Alternative method (worked for me once): 1. While in Windows, open an elevated Command Prompt window. 2. Insert a USB flash drive (may need to be formatted NTFS and/or bootable to work). 3. Type "shutdown /r /t 000 /fw". You may have to enter this 2-3 times before it will restart. 4. You may get the advanced mode menu upon reboot. I had to try many times afterwards to get the correct timing for this to work. If you don't get in, you cannot immediately retry by pressing ESC or CTRL+ALT+DEL. You need to press the power button to power the laptop off, then wait a couple of minutes before retrying. Sometimes, you have to only start pressing the F2 key about 2-3 seconds after you first press the power button to turn the laptop on. If it does not work for you on the first try, check the following (most important points come first): 0. Fast shutdown is disabled in Windows 10 to force full shutdown. 1. Secure boot is disabled. 2. Fast/silent boot is disabled. 3. OS Optimized Defaults is disabled. 4. Legacy support mode is enabled (dual UEFI-legacy mode). 5. Always on USB is disabled. 6. BIOS backflash is disabled. 7. Thunderbolt boot support is enabled. 8. Computer is at least 85% charged and not connected to AC power. 9. Controller type is changed to AHCI mode (will cause Windows 0x7B Inaccessible Boot Device BSOD unless you start it in safe mode at least once to reconfigure storage controller drivers).