Question : How do I install symantec antivirus on a Vista home premium machine.  I get an error 1920

I get an error message when I first boot up the machine which states: media test failure and PXE ended or something.  This error seems to be a result of improper installation of symantec on my MS VISta machine,

Answer : How do I install symantec antivirus on a Vista home premium machine.  I get an error 1920

Which version is it?
Make sure it supports vista and that you are logged on as administrator

To log on as local administrator you first need to enable the Administrator Account to do this
To enable the administrator account:
Press [Windows Key] + [r] to enable the RUN option
enter LUSRMGR.MSC (the local user accounts manager)
Accept the UAC warning and continue
Double-click USERS
Double-click ADMINISTRATOR
Deselect ACCOUNT IS DISABLED

Is his highly recommended that you then give the account a password - it a blank by default, The simplest what to do this is to log in as administrator, Press CTRL-ALT-DEL and select "Change Password".