G4 screen magnified/help

[harponia]

Friends:
I have an old desktop imac, G4, 10.3 system and somehow, suddenly, everything on the screen has become enlarged and magnified. How do I get everything back to normal size?
I have a mouse that does not have a ball, it's just a clear plastic oval so pushing control and dragging doesn't work.
I have gone to the "zoom/universal preferences" page under "preferences" but that does not work.
Please advise me.
Many thanks,
Harponia

 

[John T]

If Zoom under Universal Access is not ticked, you could try closing down and rebooting.

 

[harponia]

Screen magnified

Yes, I have already tried re booting and shutting the computer down; everything on the screen is still magnified. Help.