Help

[noahking]

hello my name is noah and i just finished building a new computer and am trying to install windows 7, but halfway through i got bootmgr missing
PLEASE HELP

 

[Outlander_04]

go to BIOS

set the dvd drive as the first boot device
check the hard drive is listed

save and exit bios

put the disk in the dvd drive and restart using the power button