Re: Chromebook competitor - not really
No need for AV
If users screw up then a factory reset is one button.
On the Windows competitor it's get an add-on CDwriter, hope you burned the recovery CDs when it was new, make sure you have a note of the license key.
Sit down to an hours worth of clicking OK to restart.
Reinstall all the other apps
Hope you had a copy of all your bookmarks, mail, documents,pictures etc