What if the startup manager is missing?

If the boot manager bootmgr in the C-packing directory is corrupted or missing, when you start the computer, you are prompted to not find the operating system, and a NTLDR file like Windows 2000/xp is missing.

Under Windows 2000/XP, the first thing you need to know about this type of failure is that the boot manager is missing and then go to the Recovery Console and use the expand command at the command prompt to extract the Ntldr file copy from the installation CD to the C-packing directory.

In Windows Vista It's very simple, we don't need to know exactly what causes the system to fail to start, just follow these steps:

(1) First use Windows Vista refused Strike series 1─ Sesame Door Introduction method, using the Windows Vista installation CD-ROM boot system into the system recovery options, and click on its "Start repair."

(2) The system in accordance with the set order, in turn, to find possible causes of startup failure. In the system background, the start Recovery Checker automatically tests for Windows updates (if a patch fails to occur), system disks, disk errors, disk metadata, the target operating system, startup logs, and more.

(3) If the system finds the cause of the startup failure and fixes it, it enters the dialog box, prompting you to find and try to fix the problem.

(4) Windows Vista does not show the cause of the failure by default, and you can restart the computer by clicking the Finish button to complete the restore operation.

If you need to see the cause of the failure, you can click click here for more information about diagnostics and repairs on the dialog box. On the open dialog, we can see that the root cause is the "startup Manager" loss and that the required file Repair tool has been successfully completed.