Waiting for a reboot from a previous install

Question

I'm building a VM to show the boss what we can do with Sharepoint 2010, but can't get it installed. This is a fresh install of 2008R2, all the updates are applied, and it's joined to the domain. All the pre-req's installed fine. I've re-booted and shut down
the server several times, but still get this when I try to isntall:
Any ideas?

Answer 1

Marc
Can you check the following registry keys Bill pointed out in this post. 
http://social.technet.microsoft.com/Forums/en/sharepoint2010setup/thread/bccdb9f1-dd91-4db1-bd19-6bfa658727f5
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\UpdateExeVolatile - if the value of the UpdateExeVolatile registry key is anything other than 0 you will see this message.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations - if the PendingFileRenameOperations registry key has any value you will see this message.
See additional information below:
To remove an orphaned UpdateExeVolatile registry key value
Open a registry editor, such as Regedit.exe or Regedt32.exe.
Navigate to HKLM\SOFTWARE\Microsoft\Updates\
In the right navigation pane, double-click the UpdateExeVolatile key.
Configure the key with a value of 0
Close Registry Editor.
To delete the orphaned PendingFileRenameOperations registry key
Open a registry editor, such as Regedit.exe or Regedt32.exe.
Navigate to HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\
In the right navigation pane, right-click the PendingFileRenameOperations key and select
Delete.
Close Registry Editor.
Kris Wagner, MVP, MCITP, MCTS Twitter @sharepointkris Blog: http://www.sharepointkris.com/blog