To resolve take the following steps.
1. Boot the exported VM from a Windows Server DVD appropriate to the Operating System you wish to repair.
2. Open the command prompt.
3. Click Repair your computer.
i. If no driver is needed, click Next and proceed
ii. If a driver is needed, Load Drivers.
4. The command prompt appears.
Set the partition as active
1. Type DiskPart at the command prompt.
2. Type List vol at the DiskPart prompt.
3. Write down the drive letter of the DVD drive. In this example F:
4. Write down the drive letter of the system reserved drive. In this example, it is C.
5. Type Select vol 1 (assuming volume 1 is the System Reserved volume).
6. Type active. This sets the selected volume as active.
7. Type exit to return to the command line.
NOTE: Some or All of the steps below may be required.
Copy the Boot Manager
IMPORTANT: Replace the following example drive letters with the actual drive letters illustrated above.
Type Copy f:\BootMgr c:\ at the command prompt. One of two things will happen:
i. If the file Bootmgr already exists on C:, type N to avoid overwriting it.
ii. If the file Bootmgr doesn't already exist on C:, it will be copied.
Type Bootrec /Fixmbr at the command prompt.
Type Bootrec /Fixboot at the command prompt.
1. Type Bootrec /rebuildBCD at the command prompt.
2. Close the command prompt and reboot the system into normal mode.