Can't access any administrative tasks in Windows 7

My company has just bought 3 new HP pc's running Windows 7 Pro 64bit.
They are connected to a SBS2003 domain with several other computers running Win XP.
They all use Trend Micro Client security.

On one of the new pc's Im experiencing a strange problem.
It looks like I dont have access to a broad range of administrative tasks.
I became aware of this when I tried to update the Windows Experience Index and nothing happend.
No errors or warning, just NO respons what so ever.

I can confirm that this user has full administrative rights on the computer.
I have tried to log on the pc locally as administrator but I still have this problem.

I have just ran SFC /SCANNOW but this found nothing.

Anu suggestions?

OhmitAsked:
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zaeempCommented:
Please check if you are aded to the admin accounts with full control of the computer or else it will not work. Many times people are added as power users instead of full admins
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OhmitAuthor Commented:
Can confirm that I am added as administrator.
The problem shows up even when I log on locally as administrator
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saimirkaCommented:
It seems your windows 7 installation is corrupted try using system restore or repair windows 7 using original dvd.
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yusufmustafaCommented:
1. Are you using built-in Administrator account to login? If no please specify username:

2. Does this issue occur only when running WEI(Windows Experience Index)? If no please specify:

3. Run the WEI and then Please check and if possible provide:
Application (program) events:
Security-related events:
System events:

It is always good to know what is causing the problem. Right?

Open Event Viewer by clicking the Start button , clicking Control Panel, clicking System and Security, clicking Administrative Tools, and then double-clicking Event Viewer.¿   If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Click an event log in the left pane.
Double-click an event to view the details of the event.


 
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OhmitAuthor Commented:
Dear Experts

I would like to thank you all for your input.
I found a description via Google on Nero causing these types of errors in Win7.
After removing Nero Burn, everything works fine.

Case closed :-)
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Windows 7

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