Windows Installer Problem  

Those are all OK.
Forgive me if I start going though stuff you've already done - but it's a long thread, and I have to go out soon.

Please run a full CHKDSK and SFC scan....

Click on Start > All Programs > Accessories

Right-click on the Command Prompt entry

Select Run as Administrator and accept the UAC prompt - the ElevatedCommand Prompt window should pop up.

At the Command prompt, type

CHKDSK C: /R

and hit the Enter key.

You will be told that the drive is locked, and the CHKDSK will run at he next boot - hit the Y key, pressEnter, and then reboot.

The CHKDSK will take a few hours depending on the size of the drive,so be patient!

After the CHKDSK has run, Windows should boot normally (possiblyafter a second auto-reboot) -

then run the SFC.



SFC -System File Checker -Instructions

Click on Start > All Programs > Accessories

Right-click on the Command Prompt entry

Select Run as Administrator and accept the UAC prompt - the ElevatedCommand Prompt window should pop up.

At the Command prompt, type

SFC /SCANNOW

and hit the Enter key

Wait for the scan to finish - make a note of any error messages -and then reboot.

Copy the CBS.log file created(C:\Windows\Logs\CBS\CBS.log) to your desktop (you can't manipulate itdirectly) and then compress the copy and attach it to your reply



Post a new MGADiag report with details of any error messagesencountered.

Ah - please post the CBS.log anyhow - it may still give us a clue.

There are a LOT of errors such as this one...

Code:

2013-09-14 19:47:18, Info                  CBS    Session: 30323008_709184274 initialized by client WinMgmt.
2013-09-14 19:47:26, Info                  CBS    Warning: Unrecognized packageExtended attribute.
2013-09-14 19:47:26, Info                  CBS    Expecting attribute name [HRESULT = 0x800f080d - CBS_E_MANIFEST_INVALID_ITEM]
2013-09-14 19:47:26, Info                  CBS    Failed to get next element [HRESULT = 0x800f080d - CBS_E_MANIFEST_INVALID_ITEM]
2013-09-14 19:47:26, Info                  CBS    Warning: Unrecognized packageExtended attribute.

I have seen this type of issue caused by corrupted files in the SoftwareDistribution folder - but this appears to be happening on boot, rather than during update installation? Are you getting updates installing (and/or failing) at every boot?