I was running Internet Explorer 7.0 with no issues Then the other day I had
to re install windows XP long story but I finally got back to my original
spot with all the updates installed.  But now I had Internet Explorer 6.0.  I
thought that it would be know trouble to re install IE 7.0 but I was wrong.  
I keep getting error 0x5 and the system has to reboot and Internet explorer
6.0 is back part of the log file is below.  I have checked your message area
and really have found no direct solution.  I Have Norton Internet Security
2006 with all updates Running on machine but I have turned it off and tried
to intall did not help, I also tried downloading the file to my desktop and
then booted into windows safe mode with networking and tried to install
thinking norton's was causing a problem some where along the line, but that
did not help.  I have read about some small programs you can download which
will check registry entrees that are preventing writing to, but I think that
is extreme.  I have tried several place at your web site to get answer with
out much success.  I have Firefox the newest version which runs without no
problems.  Also I have run virus scans on line along with Adware to make sure
no spyware issue or viruses.  Everything on computer is up to date and I have
Linksys router for hardware firewall.
Below is the log file I am getting any help would be much appreciated.
PS since  I tried to install internet Explorer 7.0 and then the program
tried to roll back to 6.0 , IE will not run properly It will open up but if
you click a favorite it crashes locks up.  Also I followed the
troubleshooting link once I had rebooted for troubleshooting IE7 but none of
these solutions seem to be the problem.

73.625: Copied file (delayed):  C:\WINDOWS\system32\en-US\SETF4.tmp
73.625: MyMakePerFileExceptionA: MakePerFileException failed; error=0x6ba.
73.625: Copied file:  C:\WINDOWS\system32\en-US\inseng.dll.mui
73.688: Copied file (delayed):  C:\WINDOWS\system32\en-US\SETF5.tmp
73.782: DoInstallation: Installing assemblies with source root path:
c:\e5220848ead6a90a0dfaddb8747a\
73.782: Num Ticks for Copying files : 11141
82.407: DoRegistryUpdates:UpdSpInstallFromInfSection Failed for
ProductInstall.GlobalRegistryChanges.Install error: 0x5
82.407: INF_REGISTRY Failed
82.407: DoInstallation:DoRegistryUpdates failed
82.438: Access is denied.
82.438: Internet Explorer 7 installation did not complete.

Select 'OK' to undo the changes that have been made.
82.438: Starting process:  C:\WINDOWS\ie7\spuninst\spuninst.exe /~ -q -z
120.938: Software Update Rollback has completed with return code 0xbc2.  
This rollback requires a reboot.
120.954: Internet Explorer 7 installation did not complete.

Internet Explorer 7 has been partially updated and may not work properly.
120.954: Update.exe extended error code = 0x5
0.250:
================================================================================
0.266: 2007/07/15 18:45:29.468 (local)
0.266: i:\dfd5d56c3a9d150177cd68d995f655a6\update\update.exe (version
6.2.29.0)
0.281: Hotfix started with following command line: /quiet /norestart /er
/log:C:\WINDOWS
1.766: IECUSTOM: Scanning for proper registry permissions...
3.391: IECUSTOM: Scanning for proper registry permissions...
3.656: IECUSTOM: Scanning for proper registry permissions...
7.906: In Function TestVolatileFlag, line 11873, RegOpenKeyEx failed with
error 0x2
7.906: In Function TestVolatileFlag, line 11905, RegOpenKeyEx failed w