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An error message displayed ‘BOOTMGR is missing press Crl+Alt+Del to restart’ instead, I have no idea what happened I just installed some widgets on my desktop yesterday. We found that many many users look for help in the forums like that “Today I turn up my Sony laptop and try to boot from Windows 7, but it’s failed. In addition, you should be aware that the BOOTMGR file is read-only, and cannot be modified. In most cases, the BOOTMGR file is located on the System Reserved partition, if you don’t have a System Reserved partition, the file must be located on your system partition typically the C drive. It was first introduced in Windows Vista to replace the NTLDR boot manager in previous versions of Windows like Windows XP. The BOOTMGR can read the Boot Configuration Data (BCD) and execute the winload.exe, then the winload.exe will load the essential drivers to help your system start. BOOTMGR is a file named Windows Boot Manager.
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