مشکل عجیب با ویندوز 8.1

[AMD>INTEL]

عجیب و غریبا . با f8 وارد safe mode نمیشه ؟
Use the System Configuration Tool (msconfig.exe) - works in Windows 8 & 8.1. ...
Use Shift + Restart - works in Windows 8 & 8.1. ...
Boot from a System Recovery CD/DVD - works only in Windows 8. ...
Boot from a System Recovery Memory Stick - works in Windows 8 & 8.1. ...
Use F8 or Shift + F8 (doesn't work when using UEFI BIOS & SSDs)