Generally the F2 key is used to enter the Lenovo’s notebook’s BIOS Setup, but some new models have a special button called Novo to replace Lenovo BIOS Key.

If your Lenovo uses F1 or F2 key you can access to your BIOS by start pressing on to your key a few times to your BIOS setup key just after Power ON your computer from OFF state.

Please keep in mind that some models like Yoga Series have compact keyboards so you might need to press Fn + BIOS Setup Key. For example Fn + F2.

It is much easier if you have a Novo button on your laptop.

All you need to do is pressing the Novo button when your computer is OFF. It will turn on and show you a menu.

The Novo button is generally located close to the power jack.

Lenovo ModelLenovo BIOS KeyLenovo Boot Menu Key
IdeaPad N SeriesF2F12
Ideapad P SeriesAfter the Lenovo Logo F2After the Lenovo Logo F12
Ideapad S SeriesNovo Button, Some Models : F2Novo Button, Some Models : F12
IdeaPad U SeriesNovo Button, Some Models : F2Novo Button, Some Models : F12
IdeaPad V SeriesF2F12
IdeaPad Y SeriesF2F12
IdeaPad Z SeriesNovo Button, Some Models : F2Novo Button, Some Models : F12
B SeriesNovo Button, Some Models : F2Novo Button, Some Models : F12
E SeriesNovo Button, Some Models : F2Novo Button, Some Models : F12
Edge SeriesNovo ButtonNovo Button
Flex SeriesNovo ButtonNovo Button
G SeriesF2F12
K SeriesF1F1
M SeriesF1F1
N SeriesF2F2
S SeriesNovo ButtonNovo Button
V SeriesF1F1
Y SeriesNovo ButtonNovo Button
Z SeriesNovo Button Z50-70 Novo Button Z50-70
YogaNovo Button, Some Models : F2 (Fn+F2) 
ThinkPad Yoga 12F1