Asalam o alikum

janab mujhay apne pc ka masla pochna hay...bht slow hay ager main koi song b sunta hun to woh b atak atak ker chalta hay or aaisa chand din say howa hay main nay apni hard disk b formate ker k dekh li and mere pass 3.0 ghz ka procers hay pehle 1024 ki rams thin woh khrab ho gain khud hi then new ram li 512mb ki..or 80 gb ki hardisk hay or renctly aaisa kai bar howa k meri hardisk computer show hi nahi ker raha tha i dont know aaisa kun howa almost 7 mins ise open hone main lagte hain or computer ka koi b kam kerta hun hang hone lagta hay like p1 ho?plz help me dear frineds