I'm not sure you will be able to view the browsing history
since it was deleted, but they are storeed at the hidden C:\Users\(User Name)\AppData\Local\Microsoft\Windows\Temporary Internet Files
folder. You might be able to use the free program Recuva
to restore the files at that location to see where he was at though.
You might keep him on a Standard account instead and setup Parental Controls
on it, then enable website filtering
to help block what he can access on the internet.
Hope this helps,