Apple
How do I boot into Safe Mode from BIOS?
F8 or Shift-F8 during boot (BIOS and HDDs only) If (and only IF) your Windows computer uses a legacy BIOS and a spinning-platter-based hard drive, you may be able to invoke Safe Mode in Windows 10 using the familiar F8 or Shift-F8 keyboard shortcut during the computer’s boot process.
How do I start Safe Mode in UEFI BIOS?
You can use start menu -> run -> MSCONFIG . Then, under the boot tab there is a checkbox which when checked, will reboot into safe mode on next reboot.