I had problem last week when I tried to upgrade my HP PC from Home Premium to
Ultimate...After 5 tries (with removing different programs, etc.), I finally
contacted Microsoft Tech Support and the problem fixed and upgrade was
successful...Following is part of the instruction. I don't know whether it
will help you since you upgrade from XP...
-------------------------------
From the problem description I understand that when upgrading Vista Home
Premium to Ultimate, the error message was received stating "Windows could
not configure one or more system components. To install Windows, restart the
computer and then restart the installation. The Upgrade was not successful.
Your previous version of Windows is being restored." After installing SP1,
the update was gray-out, so you uninstalled it and got the same error. If
there has been any misunderstanding, please let me know.



I understand the inconvenience you have experienced. Please be assured that
I will do my best to help you.



This behavior may occur if some specific Windows features are turned on. To
troubleshoot this issue, I suggest we perform these steps:



Disable Windows features

=================

1. Click Start button, click Control Panel, select "Classic View" on the
left panel and click Programs and Features.

2. On the left panel, click Turn Windows Features on or off.

3. Wait for a while. Then, please uncheck the following items:



"Internet Information Services"

"XPS viewer" in Microsoft .NET Framework 3.0

"Remote Differential Compression"

"Windows DFS Replication Services"



Now, please try the upgrade again.

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"DMD31842" wrote:
[color=blue]
> I have a Dell Dimension and the Upgrade Advisor says I can install
> Vistal. I purchased the Vista Ultimate CD from a retailer and every
> time I try to upgrade it fails at the end. I have tried several times,
> disconnecting everything, etc. Would it be different if I purchased
> the Dell Vista CD? Is there anything else I can do? Thanks!
>[/color]