Hi I take it you are talking about Internet Explorer and not Windows Explorer? If it's 'IE' try this...
Right Click (RC) the IE icon, on your desktop
Left click (LC) the 'General' tab
At the top it says 'Home Page' there's a box that should either be displaying your 'Home Page' (Default) or 'about:blank' (Use Blank)?
If it is showing something else, that you don't recognise high-light it and delete. Then click on either (Use Default) your 'Home Page' or (Use Blank) this brings the page up quicker. Now click 'Apply' and 'Ok'