Bootmgr is missing - Fix
This problem is not hardware related and can be fixed with a Windows 7 DVD OR a system repair disc.
1. Boot to the System Recovery Options screen.
2. Select the Startup Repair option. (See screenshot below)
A) Type c: and press <Enter>.
B) At the C:\ prompt, type cd boot and press <Enter>.
C) At the C:\Boot prompt, type the following commands and press Enter after each command:
bootrec /FixMbr
bootrec /FixBoot
bootrec /RebuildBcd
D) Now close the command prompt, remove the DVD and reboot your computer.
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