- Shutdown laptop
- Press the 'reset' (with paper clip) located to the right of the on/off button
- Select BIOS mode
- Select Configuration
- Select Hotkey Mode and disable that
- Exit by pressing Fn + F10
Restart and you should now be able to use the F keys directly!
Update 3/17/2015--
If you do this you'll notice the Escape key now requires a combo stroke (Fn+Esc) since you've effectively reversed the functions of the top row keys. (Curse you Lenovo.) The only way I found to make this less awkward was to redefine the F1 key as my Esc key too. And the only way I found to do that was through a 3rd party download (KeyTweak) which worked fine. It's really quite ridiculous Lenovo.
Update 3/17/2015--
If you do this you'll notice the Escape key now requires a combo stroke (Fn+Esc) since you've effectively reversed the functions of the top row keys. (Curse you Lenovo.) The only way I found to make this less awkward was to redefine the F1 key as my Esc key too. And the only way I found to do that was through a 3rd party download (KeyTweak) which worked fine. It's really quite ridiculous Lenovo.