how can I unlock BIOS advanced options?

[SINCOPE]

I've got a hp pavilion g6 2006sl whit BIOS "insyde20 F25 rev 3.7" and hp's motherboard model 1840.
I must log into the advanced options, but I do not know how.
At boot of pc when I press "esc" I get the screen in the picture.
Then if I press the combination "f10 + A" or "f10 then A" or "A then f10" appear always the standard BIOS without the advanced options. 
If I try to press the same sequences of keys instead the "esc" key, I have the same result.
Please tell me how I can active the advanced options in these BIOS!

[Jeet_singh]

@SINCOPE,

Thanks for reaching out to us on HP Support Forums. I came across your post and would like to assist.

I understand that you would like to access the advanced BIOS settings on your HP Notebook. 

HP has locked a few settings on your computer which are being managed by the system configuration as the device is configured to its optimal performance.

There's no way of resetting or changing these locked settings via HP articles or assistance,

You could unlock and make changes at your own discretion using 3rd party tools, however, HP doesn't recommend the same nor has information about the tools used.

I hope you understand.

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Thank you for posting in the HP Support Forum.  Have a great day!

Regards,