You can access the BIOS every time you reboot your machine. Just as the PC is booting up you’ll want to press either f12, f8, or the delete (del) key to open your BIOS before the operating system boots. You can check your motherboard manual if you want to know exactly which key to press to access your BIOS.

Do you need an OS to enter BIOS?

The operating system is irrelevant. Google your PC manufacturer or motherboard to find out what key to press on your keyboard. … If by BIOS number you mean the button you should press, try pressing it on the PCs boot. this will allow you to enter your BIOS.

How do I force myself into BIOS?

In order to access BIOS on a Windows PC, you must press your BIOS key set by your manufacturer which could be F10, F2, F12, F1, or DEL. If your PC goes through its power on self-test startup too quickly, you can also enter BIOS through Windows 10’s advanced start menu recovery settings.