Dear experts,
mere pas dell gx280 tower p4 cmputr hai.hard disk 160 GB, RAM 1GB(512 512) or proccesor 3G hrtz k qarib hai.masla ye hai k kuch din se es ki speed bohat zyada slow hogi hai or hang b ho jata hai.mai ne eski windows b change ki hai mgr koi frk nhi pra.or haan pehle 30,35 mint mai windows ho jati thi mgr ab taqrebn 1.30 hours mai hoti hai.es ko theek karne mai meri help karo plz.