Desktop Window Manager failing with event 9022

[nep]

I have a Vista Ultimate installed, with Service Pack 1. It is
activated and genuine.

Everything is working - apart from Desktop Window Manager - hence no
aero, composition, transparency etc.

The error message in the log suggests that my copy of Vista is not
genuine - depsite earlier messages in the log sucessfully validating
the license. There are no popups or information messages during
logon.

Event details below - I can find no mention of a similar problem
anywhere else? Can anybody help?

thanks in advance!

Log Name: Application
Source: Desktop Window Manager
Date: 18/05/2008 16:09:15
Event ID: 9022
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: nep
Description:
The Desktop Window Manager did not start due to the Windows
installation not being Genuine. Consult the user interface that was
raised at login to determine how to correct this
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Desktop Window Manager" />
<EventID Qualifiers="16384">9022</EventID>
<Level>4</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2008-05-18T15:09:15.000Z" />
<EventRecordID>4897</EventRecordID>
<Channel>Application</Channel>
<Computer>nep</Computer>
<Security />
</System>
<EventData>
</EventData>
</Event>

 

[Ramone]

Sinse nobody else seems to be able to help I'll take a half-hearted stab at
it. Try validating here
http://www.microsoft.com/genuine/downloads/faq.aspx.

If that doesn't work call Microsoft and say WTF!

Ramone