Laptop Acer V5-531. Bios locked. How can I cancel the lock?

My laptop Acer Aspire V5-531 does not boot up anymore. After turning on a prompt for password input comes directly, although I have set no password in the bios.

(Password / Unlock Key ________ / Unlock Key Hint Number 4170F1AD)

Ask:

How does such a lock come about?

How can I bypass the password entry, or unlock to get back into the bios, so that the laptop starts the OS (Win7 Home Premium)?

I'm really baffled and grateful for any help.

Uh, but the "hint" have been trying so hard, right? Presumably, who wants to kid you.

Unlike the first poster, nobody wants to fool you…

To activate certain functions (trustet platform module eg) you need a BIOS PW.

Important on a second device.

Enter this number under https://bios-pw.org.

On the laptop enter the code you get and you're in the BIOS.

Important… Def code changes with every boot. You can also disable it by under Security the code that you initially entered at master password? Enter and set a new password.