Need help with Windows Vista Service pack 2 (SP2) ?

This information is very useful. Thanks for the links.

i keep getting the error message server executive failure CO_E_SERVER_EXEC_FAILURE(0X80080005) when it try downloading service pack 2. what do i do?

Has anyone gotten any positive results from this error? I am attempting to fix my friends laptop where this error is occuring. I have downloaded Vista SP2 Standalone installer and received the same error.  

I think the problem stems from corruption of files on the OS due to potentially failing hard disk drive.

The laptop is an HP Pavillion DV6700 with Windows Vista SP1 preinstalled. I cannot tell if there have been any updates installed as Vista will not allow me to see if any are installed. However, the history reflects updates being installed. I think this is related to the fact that the Windows Module Installer service failes to start because of Error 126: The specified module could not be found. (as ambiguous and vague the exception message is). I did verify that the TrustedInstaller.exe does exist in C:\Windows\Servicing\. This is why I think that the disk may be suffering from some bad data blocks or clusters. Another symptom is occasionally Windows, when rebooting, will initialize chkdisk during bootup.