Windows 7 Icons disappearing

I have a user who just got a new Windows 7 machine with a new 27"  monitor.  3X since it was installed, it lost some of the icons.  They are the same ones

We are running Win2003 Exchange and Server with Office 2007.
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JohnBusiness Consultant (Owner)Commented:
I suggest you try to rebuild the Windows 7 Icon Cache. There are a number of steps and so I recommend you study the Seven Forums tutorial below and try it.

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Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
You might need to turn off System Maintenance Troubleshooter by default it is turn on

The System Maintenance Troubleshooter automatically performs common maintenance tasks below weekly in Windows 7. It either fixes any found problems automatically, or reports the problems through Action Center.

What it fixes:

Broken shortcuts - Broken shortcuts are invalid references to programs and other resources. For example, a desktop shortcut for a USB device may be regarded as broken if the USB device is not connected when the System Maintenance troubleshooter performs its maintenance. When there are more than 4 broken shortcuts on the desktop, then all broken shortcuts on the desktop are removed.
Troubleshooting history is taking up disk space - Frees up disk space by removing troubleshooting history logs older than 1 month.
System time is incorrectly set - Sets the correct system time and synchronize system clock with the time server. When the system time is set incorrectly, features that rely on time measurement such as Product Activation, malware scanners, browser certificates, etc... might not work correctly.
Unused desktop icons - Icons and shortcuts on the desktop that have been unused in 3 months are removed.
Disk volume errors - Frees up disk space by repairing hard disk volume errors such as bad sectors, lost clusters, cross-linked files and directory errors. These problems can cause the file system to report incorrect volume details and occupy excessive disk space.
Error reports are taking up disk space - Frees up disk space by removing error reports and logs older than 1 month.
Lee W, MVPTechnology and Business Process AdvisorCommented:
Basically, I suspect the problem is what the others have said, however, I have a different approach to repair - see
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Emmanuel AdebayoGlobal Windows Infrastructure Engineer - ConsultantCommented:
That articles point to the same thing except the third option that the writer was even warning about.
Lee W, MVPTechnology and Business Process AdvisorCommented:
My article says DO NOT TURN IT OFF (which you seem to say the OP should do).  My article explains how to adjust it so THIS problem does not occur.  

What exactly are you referring to?
CSD-TechComputer TechnicianCommented:
My thought on this is the same that was posted here:

In it I feel it could be the NIC Drivers may need to be updated as I have seen similar issues with a lot of these system.

I hope this helps resolve your issue,

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