i was using Avast, i have not been to the service center yet, now i think i will have to go there to find out the problem, I dont know if this a virus or software problem or a hardware problem?? I cannot figure out how this could be a hardware problem

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After installing a fresh copy of XP, i though the problem must have been solved, but i was shocked as pressed a key to type something, IE window again opened.
Another thing, during installation, i entered text when the wizard asks about the Users during the installation process, then the keypad worked fine.