Windows 7: Windows 7 SP1 x64 Install Error 0x80070490

Whenever I try to install Windows 7 Service Pack 1 for x64, either via Windows Update or the standalone installer (windows6.1-KB976932-X64.exe - 947,070,088 bytes), I get the following error message:

This happens also if I try from safe mode

So I followed the link provided by karlsnooks in the Steps to follow before installing Win7 SP1 from download center thread. The Microsoft information said that for steps 1 and 2 and need to backup my data, and update my drivers. I do this regularly, so this is a non-issue for me.

Step 3 said to install update KB2454826 if it is not already on my system. I don't need to install this update, because it's already there:

I've had a look at the CBS.LOG file (Attachment 140143), and have seen numerous errors. If someone with a bit more smarts than me can help me decode the problem so that I can install SP1?

I've also tried installing the System Update Readiness Tool (KB947821), to no avail.

As an absolute 100% no-other-choice-last-resort-effort, I am willing to format and reinstall Windows, but I'd prefer to figure out how to fix this problem without having to do so. That way, I'll be able to install SP1 onto customers computers where I do not have the option of performing a format.

I guess it's just my (good?) luck that this has happened to me first, before I need to deal with customers. Untill the problem is resolved, I'll not be installing SP1 for customers.

EDIT: For the record, my Windows 7 Ultimate x64 is legal, and has been validated:

There is an after the fact Microsoft Kb article on this. Your error reports a registry setting (cbs.manifest) that is corrupt.

They dont suggest a solution there but since cbs.log manifest is genereated by

sfc /scannow I wonder if running it would repair that. It would at least tell you if there are errors there.

Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, for Windows 7, and for Windows Server 2008 R2

Have you made any full system images and restored any to the drive? When wondering why neither the beta or RC would finish on the 64bit while a fast temp install of the 32bit would see them go on the one difference was having created and restored images where the SP installer is unable to access the primary.

When seeing the eror screen click on the link shown for the MS page since the solution information has been updated for the rtm release on different options. All the updates and readiness tool were on here but each attempt fiailed until the rtm stalled instead where new info was then seen. "mountvol /E" entered at the elevated command prompt followed by a full restart took care of that fast!

If sfc scan doesnt help, repair install would be the way to go.

SFC /SCANOW found no problems:


EDIT:
Downloading now:
http://www.microsoft.com/downloads/e...displaylang=en

It tells me "This update is not applicable to your computer":


and SP1 installation still fails:


I'm going to try to remove the update, and then re-install it to see if that makes a difference.

Peter, you've got the 32 bit version of the file. Your system's 64 bit, isnt it?

Thats what I get for trying to install SP1, fix my room fan, watch the VS02E07, and fix the cabinet doors in the kitchen at the same time.

Prometheus is the multitasker at Quad Core, not me...

Downloading Now:
http://www.microsoft.com/downloads/e...displaylang=en

That will do it! Hope iit goes well next time anyways!

(Gee how does it feel being a multitasker by the way? I typically see 10-20 things piled on at once. Every time I turn around... )

Feeling like a prat after Bill2 corrected me, I downloaded the correct System Update Readiness Tool for Windows Server 2008 x64 Edition (KB947821) [February 2011] .

Not that it helped much, because I still get the "This update is not applicable to your computer" error, and SP1 still won't install:


You don't think that maybe Internet Explorer 9 BETA could be causing the problem? Which I can't uninstall, because it does not show in the Install Updates list, or Add/Remove programs...