Fix Corrupt or Blank Windows 7 System Tray Icons

I see this a lot where I work and while I haven't yet been able to track down the source of the problem, the fix is as follows:

1. Open Regedit via Start-->Search
2. Open Task Manager via CTRL-ALT-DEL
3. Find Explorer.exe in the list and end the Process
4. Go back to Regedit
5. Select HKEY_CURRENTUSER
6. Click Edit-->Find
7. Search for IconStreams
1. Or navigate directly to HKEY_CURRENTUSER\SOFTWARE\CLASSES\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify\
8. Delete IconStreams
9. Search or navigate to PastIconStreams
10. Delete this key as well
11. Hit CTRL-ALT-DEL
12. Start Task Manager
13. Click File-->Run
14. Type, Explorer.exe 
15. The issue should be resolved.