how to boot from CD without entering boot menu?

[shmu26]

I installed a bum program that made my computer unbootable
error: cannot find boot device.

I have a macrium reflect system image backup, and I want to boot from CD, in order to restore.

problem: my BIOS menu is stubborn. Some days it opens, some days it doesn't.
today it won't open.
How to boot from CD?
I could disconnect SATA cable from the hard drive, but then, when it comes time to run restore, the hard drive will not show up, even if I reconnect it.

 

[Chaosvortexx]

Change the CD drive's sata cable port to the one labeled Sata_0 that's the one your computer automatically boots from given no other instruction to not do so. I don't know how to help the rest of your problem without saying "Buy another sata cable".

 

[noidea_77]

Resting cmos with the mobo jumper will bring back the default boot order incl. CD and may also solve the problem entering the bios setup.