I can not Open Disk Management using windows 7

Hi,

Thank you for reaching out to Microsoft Community Forums.

1. What exactly happen when you try to open disk management?
2. Did you make any changes to the computer prior to the issue?
3. Are you using Administrator or Local account?

This issue can happen due to some system files or user account corruption.

Method 1:

Try to access Disk management from command prompt.

Steps:

a. Press Windows key + R.

b. Type diskmgmt.msc in the run search box and hit enter or press OK.

Method 2:

Step 1:

Try booting the computer in safe mode and check if the same issue occurs.

Refer to the link:

Start your computer in safe mode

http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode

Step 2:

If the issue does not persists in safe mode, then start the computer in clean boot to check if any third party program is causing the issue. To configure your computer to clean boot refer the following link.

How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8

**http://support.microsoft.com/kb/929135**

Note: Refer "How to reset the computer to start as usual after troubleshooting with clean boot" under more information to reset the computer to start as normal after troubleshooting.

Method 3:

Run System File Checker (SFC) scan to fix any corrupt system files. To do this, follow the steps mentioned in the link below:

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

http://support.microsoft.com/kb/929833

Method 4:

Check if the issue persists in new user account.

Refer:

Fix a corrupted user profile

http://windows.microsoft.com/en-IN/windows7/fix-a-corrupted-user-profile

Hope this helps.