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Beginner Step
1) First delete the cookies, recent history etc from your browsers. For Firefox : Hold the "Ctrl and Shift" keys and press the "Delete" key. "Clear Recent History" will be opened. In "Time range to clear", select "Everything" from the drop-down menu. Now select all the options under "Details" and click on "Clear Now".
For Chrome : Hold the "Ctrl and Shift" keys and press the "Delete" key. "Clear Browsing Data" will be opened. For "Obliterate the following items from:" select "the beginning of time" from the drop-down menu and select all the options. Now click on "Clear Browsing Data".
For Internet Explorer :
