How to enter BIOS on Lenovo B40-70
Tips on how to access BIOS on Lenovo B40-70 with the keyboard
To reach Bios on Lenovo B40-70, the reboot is needed. One can find different keys to get to the Bios, following the model of the motherboard. To get this done, you need to maintain the necessary buttons pushed for a few seconds when the computer starts. In principle, the keys Del, F2, Esc, F1, or F10, used to open the BIOS of your Lenovo B40-70. Otherwise, it is still possible trying combos such as Alt + Enter or Ctrl + Alt.
How to enter BIOS with Windows
Assumed that the previous method does not works well, there is another alternative. You need to go to your Lenovo B40-70 settings and them choose Security Update. You now just have to select a few details to reboot and enter BIOS.