How does HP g6-2 146 notebook change BIOS to traditional boot mode?

Hello, thank you for choosing HP products. You are advised to refer to the following information:

I suggest you try to restart the machine. Press F 10 to enter the BIOS when the HP logo appears on the boot, and then set security as disabled; After confirming that traditional support is enabled under the system configuration of BIOS. Then save when you exit-exit to save changes-yes, yes, see if you can solve the problem you encounter.

I hope the above reply can help you.