By default, Windows8 will automatically lock the screen after 1 minute
of idle time. This will force you to get past the lock screen graphic,
and then type in your password. Normally with Windows7 and previous
versions, you simply did not have to have a screensaver.
To make the changes to Windows8 so your desktop will always be showing,
you need to make the following changes.
Press with Win+R keys and type in
gpedit.msc. This will bring up the Group Policy Editor
Go to Computer Configuration /
Administrative Templates / Control / Personalization
Double click on Do not display the lock
Set it to Enabled
The start the Registry Editor - Win+R and
type in regedit