How can I access to advanced options in F.19 version?

[Bohosul01]

I'm trying to check the above 4G decoding option in my BIOS because my PC has high DPC latency and I have already tried everything: updating drivers, disabling c-states, disabling turbo boost, running the Intel Chipset update Utility, running "sfc / scannow" command, disabling dynamic ticking... But I'm not able to solve it. 

So I tried to access to BIOS advanced options tab. I have tried pressing  tab+fn 5 times, F10+A and F1+Crtl in the boot manager, but none of them have worked

How can I access to advanced options in F.19 version? Is there a way to check above 4G decoding in Windows 10 without BIOS?

[WAWood]

@Bohosul01 

Sorry, but apart from business notebooks and some high-end gaming PCs, accessing Advanced BIOS option on HP PCs is not possible.

Some OEMs lock out the advanced BIOS options to prevent customers from making changes to options that can destabilize or otherwise damage the PC -- and then send it back for repair under warranty claiming they did nothing to it.

I know only SOME of the advanced options are risky, but it's simpler to disable access to ALL advanced options than to allow/disallow on an individual option basis.

That's the course of action that HP has chosen. No one from here is going to provide you any means of getting around that.