Fix no bootmanager / bootmgr is missing to start Windows

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Manual:

The fix should be also work in other cases, if u get the "Bootmanager missing" error messages, but in that situation, it was because u have a new HDD inside or put one HDD out of your PC, u still have a Windows on the HDD, but Windows show you problems like BootManager missing or something and dont wanna start your Windows on the HDD. So here is what u need to do...

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1. Boot from your Windows OS CD.

2. Go in the "repair option" and then click on "command prompt" to open cmd window.

3. Write "diskpart" and press enter.

4. Write "list part" then u see your Harddrives with a number behind the names.

5. Write "select disk 0" the number based on the HDD what u wanna choice for windows.

6. Write again "list part" and u can see the partitions (with numbers behind the names) on that HDD what u choiced before.

7. Write "select part 1" the number based on the partition what u wanna use for windows.

8. Write "detail part" then u see the informations about the partition and the partition should be now on "active: no" because of that, we must actived it.

9. Write "active" and after pressing enter, its should be active now. To check it, u can write again "detail part" and on active should be now "yes", so your partition is active now.

10. Now restart your PC & boot again from the Windows OS CD, if u forgot before to change the bios to boot from CD/DVD, u will get message like "bootmanager missing", then just go in your "Bios / Boot option" and change the "Boot option 1 to "CD/DVD" now restart and its should be boot from the CD.

11. Then go again in the "repair option" the "systemrecovery option" search/check your HDD and then a Message should come, what says that windows found a problem at the Start option and its ask u, if u wanna repair it. Click on "Repair & Restart".

12. After the restart u should see a option, choice on the top "windows setup". After that u come again on the Windows CD.

13. Go again in the "repair option", and the "systemrecovery option" will search/check again your HDDs and its should find now something like "Windows 7 home premium" or anything like that, click on it to choice it and press continue.

14. Then click on the top the "System Start repair" option, then its should short repair something.  After that its ask u to restart to finish it.

15. After the restart, u should see a option and the top u can now choice your windows, anything like "Windows 7 Home Prem (recovered)".

16. After u pressed enter your Windows should be start like normal.

17. Its done, but dont forget to go back in the Bootoption to choice your HDD on the first boot, so your PC will start like alltimes.