Deleted Boot Option! How can I reverse it?

[mrantlau]

System: Windows 8
Battery or AC: Both
Model: UltraBook
Frequency of occurrence:
Reset OS:
Screenshot or video:
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Detailed description：I deleted the Boot Option in Setup Utility when I tried to change to boot from CD/DVD. How can I change it back so I can add the Driver Option Priorities and Boot Option Priorities back.
The Laptop could not boot up after I dropped it!

[RAJU_MSC_MATHEM]

you can add the boot manager path to the boot option by manually .
see the following page, it helps to you
Restoring UEFI boot entry via motherboard replacement or BIOS update - Thomas-Krenn-Wiki

if above method is failed means , then visit below page
https://www.dell.com/support/article/en-in/sln300987/how-to-repair-the-efi-bootloader-on-a-gpt-hdd-f...

[mrantlau]

I got the UEFI boot entries up under Boot Option Priorities but there was no Add New Boot Option to add CD/DVD drive! How can I add the entry to boot from disk?

[RAJU_MSC_MATHEM]

I dont have your model laptop , but try these
disbable secure boot , enable legacy boot , then enable CSM mode , save and exit .
agaIn to bios , see if add new boot option appeared or not