I am just retired so now have no IT Department to call out! I think mine
might be the same (XPHome) problem - if I leave the PC for more than a couple
of minutes without activity, I am returned to the log on screen (although it
shows me as having n programmes running. Can I at least alter time delay
before this happens - it's getting annoying!
Two places to check:
Right click the desktop and select properties to bring up the window with
display properties. On the screensaver page, remove the check box that
requires a logon when resuming.
Second place: Control Panel (classic view)> Power Options: Remove check
from setting that requires a logon when resuming from standby.
In both places (display properties and power options), you'll also see
where you can adjust the amount of time that will pass before the
screensaver or standby kick in.