Bootmgr is compressed


  1. gotenson
    Posts : 2
    Win7 starter
       New #1

    Bootmgr is compressed


    Hello, dear members :)

    So, i've got a big problem. Yesterday, I tried to reinstall my windows 7 starter on my Acer Aspyre One AOA 150. I wanted to delete everything from HDD, but after, when I trying to restart, I meet this nice characters: BootMgr is compressed.

    I read a lot of informations in this forum, but I can't solved this problem.

    I prepared a bootable HDD from my TOSHIBA, and I changed the first boot to the USB HDD ( I don't know why can't I boot from SDD card.. ). When the boot is starting, it took a few seconds, and BootMgr is compressed, press ctrl alt blabla...

    Without bootable HDD, the Windows Boot Mgr wrote: The windows boot configuration data file does not contain a valid os entry.

    What can I do in this situation?
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  3. Maguscreed
    Posts : 6,668
    Windows 7 x64
       New #2

    "Bootmgr is compressed" - problem
    That should direct you right to the post you need.
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  4. gotenson
    Posts : 2
    Win7 starter
    Thread Starter
       New #3

    I tried every tips, but they didn't solve the problem
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  6. Brink
    Posts : 72,050
    64-bit Windows 11 Pro for Workstations
       New #4

    Hello Gotenson, and welcome to Seven Forums.

    Just to be sure, did you also try this below at boot?

    BootMGR Compressed Message at Boot Fix - Vista Forums

    Hope this helps, :)
    Shawn
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  7. gregrocker
    Posts : 50,642
       New #5

    What's likely happening is that your external HD installer like the SD card installer rarely works well for installing Win7, so it is not booting and instead trying to boot your failed Win7 installation. Do you still need to access Win7 to rescue files or for any other reason?

    If not I would write the Starter ISO to USB flash stick using Universal USB Installer with Win7 in dropdown menu.

    Then boot it to wipe the HD with Diskpart Clean Command accessing the Command Line at first screen by pressing Shift + F10. After Clean command completes, close Command Box and proceed to Clean Install Windows 7
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