How to enter BIOS on Acer ES1-531
How to access BIOS on Acer ES1-531 with the keyboard
To access Bios on Acer ES1-531, the restart is required. You can find different keys to get to the Bios, following the version of the motherboard. To accomplish this, you have to maintain the necessary keys pushed for a few seconds when the computer starts. In theory, the keys Del, F2, Esc, F1, or F10, used to open the BIOS of your Acer ES1-531. Or else, it is still possible trying combos such as Alt + Enter or Ctrl + Alt.
How to enter BIOS with Windows
If the previous procedure does not works well, there is certainly another option. You need to go to your Acer ES1-531 settings and them choose Security Update. You now only have to select some parameters to reboot and enter BIOS.