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Windows 7: BOOTMGR is missing on reboot

08 Jan 2012   #11
Microsoft MVP


Win7 cannot be expected to boot on different hardware without running Paragon Adaptive Restore on the HD or SysPrepping it first on the old hardware.

Extract the ISO from DVD using ImgBurn then write to flash stick using Universal USB Installer with Win7 in dropdown menu. Boot under USB, Removable or HD's on one-time BIOS Boot Menu key.

Your Active OS partition is not marked System likely meaning it does not have the System boot files intact.

You'll need to run Startup Repair 3 separate times to repair the System boot files.

When you boot into F8 System Recovery Options does it find an installation to Repair? You'll need to click on it to highlight it then tick the options box to proceed to the next screen to run Startup Repair. You can also advance to the next screen without it finding an installation to repair. If this fails your USB stick may be badly written and faulty.

My System SpecsSystem Spec
08 Jan 2012   #12

Windows 7 Ultimate x64

Found a fix to this issue! It turned out what addram said was correct!
Quote   Quote: Originally Posted by AddRAM
I did some trial and error last nite (marking the C: partition active ) and I managed to recreate the error message you got ( this version is incompatable etc. ) If I used a Windows 7 install disc with service pack 1 to attempt a startup repair I got the message. So I said huh, let me try the pre service pack 1 version and Wala !!!! It fixed it on the 1st pass!!!
SP1 stick was NEEDED to press the next button. From there, I followed gregrockers instructions, did the 3x system repair and I finally got somewhere. After this, my problem changed to a "pwnative missing skipping autochk" "auto check missing skipping auto check" I then used this thread Startup Repair Infinite Loop Recovery and fixed my issue!

Thank you very much both of you and all of Sevenforums, computer is up and running as usual! I am making a backup image and a restore point right now.

My System SpecsSystem Spec
08 Jan 2012   #13
Microsoft MVP


If you remove XP from Dual Boot and get "Bootmgr is missing" then the fix has always been to mark Win7 partition Active then run Startup Repair up to 3 separate times with reboots.

I have no idea why you needed the fix for Startup Repair Infinite Loop Recovery if you were not having Startup Repair autostart each time you rebooted. What led you to this solution which has nothing to do with "Bootmgr is missing."
My System SpecsSystem Spec


 BOOTMGR is missing on reboot

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