Windows 7 google update installation failed with error 0x8004071c

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\State

modify 'ImageState'  delete the value

taken from http://www.google.com/support/forum/p/Chrome/thread?tid=79820ca9afc81ec0&hl=en

it applies to windows 7 too.

or

Alternatively,

1. Press the Windows Key
2. Type CMD in the 'Search programs and files' input box
3. Once the CMD command is highlighted in the start menu, press and hold CTRL + SHIFT + ENTER
4. Select Yes on the user account control dialog
5. Paste the following at the command prompt:

reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\State /v ImageState /t REG_SZ /d "" /f

I have tried this but the same error persist

Same thing has happened to number of other users running Windows 7.
http://www.google.com/support/forum/p/earth/thread?tid=4aaf89c85977b3ce&hl=en

Suggest thread this thread then do following steps:
1) try to uninstall GE in Add/Remove Programs list
2) download GE from advanced setup
  From this page uncheck 'Allow Google Earth to automatically install recommended updates'
  http://earth.google.com/intl/en/download-earth-advanced.html

tried the above ?

i tend to find the auto updater (the thing that runs with standard installs ) is buggy at best.

Download and run the Windows Installer CleanUp Utility at http://support.microsoft.com/kb/290301 maybe worth a try.

Did you restart after the registry changes before running the install again?