HelpWindows7.com

[aaron]

I have just finished installation of windows 7 and after reboot I get the message
"bootmgr is missing" I have even tried to boot from the disc that also does not work. Windows7 is the only operating system installed on my PC.

[felix]

Repair the BCD store by using the Startup Repair option

1. Inset the Windows 7 installation disc in the disc drive, and then start the computer.

2. Select a language, a time, a currency, etc and click Next.
3. Click Repair your computer->select your operating system
4. In the System Recovery Options dialog box, click Startup Repair option.
5. Startup Repair will scan your PC to find and solve any startup problems.
Startup Repair can prompt you to make choices as it tries to solve the issue, and if necessary, it might reboot your PC as it makes repairs.
6. If issues cannot be found, then click on Next.
You can click on the View diagnostic and repair details link to see a detailed summary of what Startup Repair has done.

Click on the Restart button to return to the Windows 7 logon screen.

[gabriel]

I think the cause of this problem due to the following 2 reasons
1. The Windows Boot Manager (Bootmgr) entry is not present in the Boot Configuration Data (BCD) store.
2. The BCD file on the active partition is corrupted or missing.
In order to check this click on start->run->type CMD->Navigate to rootdirectory\Boot directory and look for the BCD(Boot Configutation Data) file.

First check whether BCD file is present or damaged

You can check it out by the CMD prompt. Just navigate to rootdirectory\Boot directory and look for the BCD(Boot Configutation Data) file using the command prompt in Windows 7 and look if BCD file is present or damaged. For resolution follow the steps in the link given below.

Rebuild the BCD store by using the Bootrec.exe tool

1. Insert the Windows 7 installation disc in the disc drive, and then start the computer.
2. Press a key when you are prompted. Then choose language, keyboard or another input method and click next
3. Click Repair your computer.
Choose the operating system you want to repair->click Next.
4. In the System Recovery Options dialog box, click Command Prompt and type

Type Bootrec /RebuildBcd, and then press ENTER.

--If the Bootrec.exe tool runs successfully, it gives you with an installation path of a Windows directory. To insert the entry to the BCD store, type Yes. A confirmation message displays that indicates the entry was added successfully.
----- If the Bootrec.exe tool cannot find any missing Windows installations, you have to delete the BCD store, and then you have to re-create it. To do this, type the following commands in the order in which they are given. Press ENTER after each command.
Bcdedit /export C:\BCD_Backup
ren c:\boot\bcd bcd.old
Bootrec /rebuildbcd
5. Restart the computer.

[bonaventure]

If the above method could not resolve your issue then try the following steps
In the System Recovery Options box, click Command Prompt.
Type the following command, and then press ENTER:
cd /d Partition:\Windows\System32
Note Partition represents the letter of the partition on which Windows 7 is installed. Typically, this is partition C.
bcdedit /enum all
From the output from this command, note the GUID
bcdedit -create {bootmgr} -d "Description"
bcdedit -set {bootmgr} device partition=Partition:
bcdedit /displayorder {GUID}
bcdedit /default {GUID}
bcdedit /timeout Value
Restart the computer.