How to REALLY enter setup on ASUS K75DE?

[alainalemany]

I really have no idea what's going on here. I have an ASUS K75DE and both official manual and the official site says the Setup key is F2, however no matter how fast I smash the key constantly, nothing happens. I even did that process with "Fn" key pressed and again, nothing.

What's going on here?

 

[sweenytodd]

Have you tried the DELETE button?