Missing Operating System Windows 7 | Software And Social

Missing Operating System Windows 7 | Software And Social: When You could't start your Windows 7 Operating System, Try the Solution It may work with you!
I can not start my operating system Windows 7 because the bootmgr is missing.
This error appeared after leaving my computer on standby . Upon completion of work and leave it suspended the next day to start it , I am surprised when windows does’t start and got this message: bootmgr missing – press ctrl + alt + del

My computer has Windows 7 Ultimate 64-bit .