Wow,I`ve got my problem solved without doing anything (don`t know how).
I just set the restore window initial size to maximum by using Conan`s advice but infact added a bit of my own,ie.Just opened a single browser window & streched it to maximum & then by holding down the Ctrl key Closed the browser window through File>Close.
& donno wat happened & when I restarted my PC the next day & used IE,got it absolutely perfect.