The decision to disable Windows Boot Manager usually occurs when the user automatically selects the last loaded operating system and is unable to make a choice. It cannot cause anything but irritation, but the problem can be solved by standard system tools.
It is necessary
bcdedit.exe
Instructions
Step 1
Download the bcdedit.exe tool to repair the boot loader and create a boot menu and boot into Windows Vista or Windows 7.
Step 2
Click the "Start" button to bring up the main menu of the system and go to the "Run" item to launch the "Command Prompt" tool.
Step 3
Enter cmd in the Open field and click OK to confirm the launch.
Step 4
Enter bcdedit / enum in the command prompt text box and press the Enter function key to execute the command to launch the Windows Boot Manager tool.
Step 5
Check the service parameters: identifier - {bootmgr} device - partition = C: description - Windows Boot Manager locale - en-ru inherit - {globalsettings} default - {current} resumeobject - {46dd504a-e6f8-11de-b0e1-001167984714} displayorder - {current} {94f865ee-da78-11de-8e4b-a88c18832a0b} {ntldr} toolsdisplayorder - {memdiag} timeout - 15. Enter the value bcdedit / default desired_operating system_id in the text box.
Step 6
Press the Enter function key to execute the command and wait for the success message to appear.
Step 7
Restart your computer to confirm the selected changes are applied.
