CS5.5 DS1 on new Win7 64 Xeon fails to load any VC msi

Installing from a genuine CS5.5 DS DVD I get Error Code 7 just after the installer shows it was attempting to install Microsoft_VC90_CRT_x86.

I have a brand new factory imaged HP Xeon Win7 64 E3 1240 16GB ram SSD C drive and normal spinning E drive.

I updated to latest Windows updates, but have no other software or antivirus etc installed yet!

What I have tried:

Googled the many and varied solutions suggested...

Turned UAC off.

Run as Administrator.

Copied the DVD content to E and run from there.

Specified the install to path as E (to avoid potential SSD issues on C)

Tried to load a trial version off the DVD, and tried the different language options.

I have successfully run these commands from an elevated cmd prompt:

Click Start, type sfc /SCANNOW in the search field, and press Enter.

Click Start, type msiexec /unreg in the search field, and press Enter.

Click Start, type msiexec /regserver in the search field, and press Enter.

secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose

Installed the Microsoft Visual C++ 2008 Redistributable Package (x86) from

http://download.microsoft.com/download/1/1/1/1116b75a-9ec3-481a-a3c8-1777b5381140/vcredist_x86.exe

Uninstalled and reinstalled .net4.5

If I double click the msi files directly I get a Windows error to say that:

This installation package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer package.

E:\Adobe CS5_5\payloads\Microsoft_VC90_CRT_x86\microsoft_vc90_CRT_x86.msi

and the _x64 version, and all the VC80 and VC90 msi files.

I installed a couple of these to a different Win7Pro 64 PC successfully

Installed Reader XI ok, but now when I attempt to install CS5.5 again I get the prompt to the Support Advisor - which has been discontinued. Grump.

The results of the Compatibility troubleshooter..

PrintProgram Compatibility Publisher details

Issues found

Incompatible ApplicationIncompatible Application

Microsoft_VC80_MFCLOC_x86 is incompatible. Detected Detected

Fix application Microsoft_VC80_MFCLOC_x86 Completed

Issues found Detection details

6 Incompatible Application Detected Detected

Microsoft_VC80_MFCLOC_x86 is incompatible.

Fix application Microsoft_VC80_MFCLOC_x86 Completed

Provides steps to fix the incompatible application.

InformationalCompatMode

CompatMode

# RUNASADMIN MSIAUTO

InformationalUserVerifySolution

User Verification of Solution

Verify_YES

  Detection details Expand

Collection information

Computer Name:  Z230XEON

Windows Version: 6.1

Architecture: amd64

Time: Tuesday, July 08, 2014 11:09:52 AM

Publisher details Expand

Program Compatibility

Make older programs run in this version of Windows.

Package Version: 1.5

Publisher: Microsoft Windows

Program Compatibility

Make older programs run in this version of Windows.

Package Version: 1.0

Publisher: Microsoft Corporation

All I can think is that these msi's are not compatible with the Xeon processor? (it reports Architecture: amd64 )?