Does your account have admin rights? If not, maybe that's why it's doing it. Only other option I know of is to disable it via the registry.
Why can't I permanently turn off screensavers?
Miscellaneous Forums/General Discussion/Why can't I permanently turn off screensavers?The forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.