This may seem like a silly question, but did you completely uninstall Office 2007 before installing Office 2010? I did a short bit of searching and found This Microsoft Article
on uninstalling Microsoft Office. You may need to do a complete uninstall of both Office Products, then reboot. That may fix the issue.
Also, you could check the Event Viewer and look for any messages that occur at the time that the installer stops working. You can find the Event Viewer in Windows 7 by following these steps.
- Click Start
- Click Control Panel
- Click System and Maintenance
- Click Administrative Tools
- Double Click Event Viewer
- Expand Windows Logs
Look through the Application
section and look for any errors that might indicate a possible issue with the Office 2010 install. Also, click on the System
section and check that as well.