When starting from the hard disk, the motherboard gives out Bootmgr is missing?

Question

Iron

There are windows 7 installation files on the hard drive, but when I try to boot from the disk, it just says "BOOTMGR is missing".
PS
I'm not technically savvy...

Answer 1

Try to disable everything except the boot disk (keyboard, mouse, stereo, external media), recheck the connection to the disk. I had a similar problem, I reconnected the hard drive and everything worked, try the same.