Do you mean minimised as in just a bar at the bottom of the screen or just a page that doesn't fill the screen? If the latter all you have to do is point the mouse at a corner of the page to get a double headed arrow then click and drag the corner to where you want it. You can do that with the other corners as well. Your browser should remember this setting next time you use it.
Thank you for your interest. Sorry if I did not explain fully. When I say minimised I mean that it does not fill the screen - one has to depress the maximise button top r/h of screen. It would be a great help if I am able to solve this problem. Thank you.