but I am not sure I remember the procedure, so you may have to experiment.

Open IE, then goto Google, or another search engine to google anything or use any link you have on your Home Page. Find a link, right click it and select Open in a new window.

You should have two IE windows open. Minimize the first, and either maximize the second or drag it to the required size. Re-display the first window and close it down using the X button.

Now close the second window, either by X or File > Exit.

Now open IE again. Does that work?