So let's assume its a browser window issue, use this snippet I got from a past similar IE browser window issue in this forum.
"Open an instance of Internet Explorer. Hover the mouse over the edge of the window until a two-headed arrow appears. The hold down the left mouse button while dragging to the edge of the screen. Once you have IE maximised this way (don't use the maximise button) hold down the Shift key and click the close [X] button. The next time you open IE it should open maximised.
If you are opening IE from a desktop shortcut, right-click on the shortcut and select Properties. From the dropdown list next to Run, select Maximised. Then click OK."
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