Solution for Window 7 Service Pack 1 Fatal Error : c0000034

   If you are having this error called c0000034 while installing windows 7 sp1. Following instructions may be helpful.

01. Reboot your computer while it's starting up.

02. When your computer starts up again, choose the option "Launch Startup Repair" 

03. When the Startup repair starts, click cancel.

04. After you click cancel it will show a box. Click "Don't Send" 

05. Click the link "View advanced options for recovery and support"

06. In the new window click Command Prompt at the bottom.

07. In Command Prompt type this and press enter: notepad.exe

08. Notepad will open. In notepad go to File-->Open.

09. Change the type of files notepad views from .txt to All Files

10. Now in Notepad, go to C:\Windows\winsxs\ (or whichever drive Windows is installed on)

11. In that folder, find pending.xml and make a copy of it

12. Now open the original pending.xml 

13. Press CNTRL+F and search for the following exactly: 0000000000000000.cdf-ms

14. Delete the following text (yours will be a little different):

<Checkpoint/>

<DeleteFile path="\SystemRoot\WinSxS\FileMaps\_0000000000000000.cdf-ms"/>

<MoveFile source="\SystemRoot\WinSxS\Temp\PendingRenames\e56db1db48d4cb0199440000b01de419._0000000000000000.cdf-ms" destination="\SystemRoot\WinSxS\FileMaps\_0000000000000000.cdf-ms"/>

Your PC might not have all 3 sections of code (<Checkpoint>, <DeleteFile>, <MoveFile>). Just make sure you delete section "Checkpoint" and whatever other sections have "000000000000000.cdf-ms". They will be right next to eachother.

15. Save the file, close notepad, close command prompt, restart your computer.