Cannot boot to the Active@ Boot Disk for Windows CD-ROM. The error CDBOOT: Couldn't Find BOOTMGR appears.

Suggestions: Try is changing the disk controller in BIOS from AHCI to ATA - see if that helps.

Since we recommend changing a BIOS setting please add If you changed the BIOS setting, you will probably need to change it back when you are finished with boot disk in order for the computer to boot into a regular windows boot.