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Bad Image Error

Description – When booting into Windows you receive an error that says, “lsass.exe – Bad Image. The application or DLL C:\WINDOWS\system32\MPR.dll is not a valid Windows image. Please check this against your installation diskette.”

Cause – This can happen if a chkdsk moves the file (and potentially others) referenced in the error.

Solution – Copy the files back to the hard drive from the Windows installation disk.

  1. Boot to the Windows XP disc. Make sure the disc is as close as possible to the version installed on the computer. (i.e. Use a Windows XP SP3 disc)
  2. When prompted press R to enter the Recovery Console.
  3. Select the Windows installation & type the administrator password.
  4. Look on the root of the C drive & navigate to the latest FOUND directory. In my case the directory was C:\found.000\dir0000.chk.
  5. Note the files that have been moved. There may be more than just the mpr.dll file in this example. In my case the files were mpr.dll, mprapi.dll & mprdim.dll.
  6. For each file, determine the directory that the file should be in. If there are multiple files, they could potentially belong in different directories. In my case, all three files are supposed to be in C:\Windows\System32. I also verified this by typing dir c:\windows\system32\mp*.dll. I noticed that those 3 files were there but that they all had a file size of 0.
  7. Copy each file from the Windows installation CD to the correct location. In this case the commands I ran were:
    copy d:\i386\mpr.dl_ c:\windows\system32\mpr.dll
    copy d:\i386\mprapi.dl_ c:\windows\system32\mprapi.dll
    copy d:\i386\mprdim.dl_ c:\windows\system32\mprdim.dll
  8. Reboot the computer. It should boot up like normal.
  9. For good measure you should run a chkdsk /r to make sure everything is OK. Using the /r switch can make it take a little while.
Categories: Computers Tags: ,
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  1. January 2, 2011 at 11:08 pm

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