BOOTMGR is compressed Press ALT+CTRL+ DEL

Asked By 340 points N/A Posted on -

I am trying to install Windows 7 to my old Windows Vista, when it asked for 14GB free spaces. My computer has 1GB RAM, 80 GB HDD with Intel Core 2 Duo inside.

I tried compressing C Drive then restart my computer. But when it open, it won't let me boot on, there is an error of BOOTMGR is compressed Press Ctrl + Alt + Del to restart.. That's really distressing.

I don't realize that compressing my C Drive will stop my computer from booting.. I inserted the installation disk to try to repair my system, but it just won't work. My system did not boot from the installation disk. I forgot that my operating system is stored in C: root directory as a hidden file. 

How can I restore it if I don't have any back up at all?


BOOTMGR is compressed

Press Ctrl+Alt+Del to restart

I searched the Internet for solutions, according to those people on some forums, I should try to boot from a USB, well I don't have a USB and how can I put a bootable operating system to a USB when I can't even reach the Windows logo of my computer?

I will appreciate any help. I am running Windows Vista Ultimate, and I am trying to upgrade to Windows 7 Ultimate.

Best Answer by Glenn.R
Best Answer
Best Answer
Answered By 5 points N/A #108432

BOOTMGR is compressed Press ALT+CTRL+ DEL


Hi Kacie,

Windows Vista includes a System Recovery Options menu which helps to restore the computer from serious system failures. The System Recovery console consists of the following options: Startup repair, System Restore, Windows Complete PC Restore, Windows Memory Diagnostic Tool, and Command Prompt. The System Recovery console will be already installed in the installation disc. If your copy of Windows Vista came pre-installed on the computer and if you are unable to locate the recovery menu, the computer manufacturer might have provided other options.

Note: You may back-up all the important files and applications before accessing the System Recovery console.

Please follow the steps provided below to open the System Recovery Options menu:

  • If you have Windows Vista installation disc

    1. Restart the computer after inserting the Windows Installation CD in the CD drive.
    2. Press any key if you are prompted to start installing Windows from the installation disc.
    3. Choose the language setting and click “Next”.
    4. Click “Repair your computer”.
    5. If you have multiple operating systems installed on the computer, select the one that you would like to repair, and click “Next”.
    6. On the “System Recovery Options” menu, select the tool option.
  •  If the copy of Windows came pre-installed on the computer

    1. Remove all CDs and floppies from the computer and restart it.
    2. If only one operating system is installed on the computer, press F8 as the computer restarts before the windows logo appears. And if more operating systems are installed, choose the one that needs to be repaired and press F8.
    3. On the “Advanced Boot Options” screen, choose “Repair your computer” option to help of arrow keys and press “Enter” on the keyboard. If the “Repair your computer” option is not highlighted, then the recovery console is not pre-installed on the computer. In this case contact your computer manufacturer.
    4. Select the keyboard layout, and click “Next”.
    5. Select the username and enter the password, and click “OK”.
    6. On the “System Recovery Options” menu, select the tool option.

Startup Repair:This option can be used to troubleshoot issues caused by missing or damaged system files. If the setup is unable to resolve the issue, it will display a summary of the issue and the link that will help you in solving the issue.

System Restore:Helps to restore the system performance as that of an earlier point. Please follow the steps below to restore the computer to an earlier restore point:

  • Click “Start” button, choose “All Programs” and open “Accessories”.
  • Point to “System tools” and open “System Restore”.

Note: You should be logged in as the Administrator.

  • In the System Restore window, click “Choose a different restore point” and click “Next”.
  • Select a restore point from the list that was created before you began to experience the issue, and then click “Next”.
  • Click “Finish”.

Please visit the following web link for more information: Windows Restore FAQs

Windows Complete PC Restore: Helps recover the system files from the backup.

Windows Memory Diagnostic Tool: Helps to scan the computer memory for errors. To manually access the Windows Memory Diagnostic toll, follow the below steps:

  • Click the Start button.
  • Open the Control Panel.
  • Open “System and Maintenance” by double clicking it and choose “Administrative Tools”.
  • Then choose “Memory Diagnostics Tool”.

Note: You should be logged in as the Administrator.

For more information, please visit: Windows memory problem

Command Prompt: Includes advanced troubleshooting options. For more information please visit: Command Line ref

I hope the information provided is helpful.


Answered By 0 points N/A #108433

BOOTMGR is compressed Press ALT+CTRL+ DEL



To fix the File system at the command prompt enter chkdsk c: /r . This will check and repair the problems on the partition. 
Repair the BOOT process. This method can fix the problem even without logging in the windows logo menu and safe mode.
To replace the MBR (Master Boot Record). Type these commands in the command prompt.
bootrec /FixMbr = this inserts new generic MBR  without changing the partition table.
bootrec /FixBoot = insert a new Windows 7/Vista compatible boot sector. It automatically inserts the right type of sector for the file system type (NTFS, FAT32, etc.)
bootrec /RebuildBcd = Rebuilds the Boot Configuration Data (BCD). The BCD controls which partition boots. This option lets you select which installations to include in the BCD.
bootrec /ScanOs = Scans the system for all OS installations that are compatible with Vista/2008 and shows the one that is currently included in the BCD.
enter at the end
C:/expand bootmgr temp
Hope it helps.


Answered By 340 points N/A #108434

BOOTMGR is compressed Press ALT+CTRL+ DEL


The solution above helped me,

Thanks for sending unending support to every members of techyv.

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