Ok first thing he can try is resetting IE7. To do this tell him to do the following.
- Start Internet Explorer 7.
- On the Tools menu, click Internet Options.
- On the Advanced tab, click Reset.
- In the Reset Internet Explorer Settings dialog box, click Reset to confirm
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If that does not work he can try reinstalling IE by doing the following just be careful not to delete anything in the folder.
- Click Start, click Run, type %systemroot%\inf, and then press Enter.
- Find the Ie.inf file that is located in Windows\Inf folder.
- Right-click the Ie.inf file, and then click Install.
- Restart the computer when the file copy process is complete.