hi guys, i hav good news.. the issue is resolved! it played on my end before the hdd crahed the OS was instaled on the older hdd. i used norton partition magic to delete the existing partition and created a new parttion and also formatted it. everything is working fine now!
i don know whther i diagnosed the problem correctly or not.. but am hapy that everything has ended well..!
thanks guys .. i really appreciate the replies and advices... THANK YOU!