HP 600 G9 Workstation does not boot from external Hirens DVD

[GetemJeff]

Hello, I was trying to use Hirens disc with external DVD drive on a HP 600 G9 Desktop Workstation.

I disabled Secure Boot and changed the Boot Order to have USB: DVD on top. When I applied the BIOS settings, the restart would ask me to enter the 4-digit PIN to confirm disabling Secure Boot.

Then it restarted again and attempted to boot from DVD, but got stuck on "HP Wolf Security" screen. There were no circles on the bottom like it usually had for booting into normal Win11 system. There were also no Legacy Boot options when I accessed BIOS again. All the boot options belonged to UEFI boot order.

After about 5 minutes, sometimes it turned into Blue Screen and showed "Your PC/Device needs to be repaired" with "Enter to try again", "F8 for startup settings", and "ESC for UEFI settings" options.

Other times it just shut off the machine completely.

Could anyone provide insights on what BIOS settings I need to boot from External DVD? Thank you for any input.

[Bill_To · Accepted solution]

Greetings @GetemJeff 

Welcome to the HP Forum.

I would copy and paste your post to the HP Business PC Board.

My guess is HP Wolf Security may be creating a roadblock.

I can boot to, and use, a Hirens' Recovery USB created using WinPE on a W11, TPM, Secure Boot, non HP PC without BIOS modifications.

I am also not using BitLocker.

Regards

[GetemJeff]

Thank you for the insights. I learned that there were security concerns regarding this topic, so I would not further discuss this.