Changing Bios Settings - Acer ES1-431 User Manual

Changing your Windows version - 35
2. Select Yes.
3. Select Windows 7, and then click OK and follow the instructions.
Windows will restart, replace Windows 8.1 with Windows 7, and then
start the Windows 7 setup process.

Changing BIOS settings

To change your BIOS settings, press <F2> when you see the Acer
logo during boot up.
Use the arrow keys to select Boot > Boot Mode.