mian nai 2 mahiny phly core 2 duo hp dc 7800 system kharida hai .jis main 160 hardisk , 2.6 proccessor aur 3 gb ram hain aur Q35 board hai.main computer k baray itna janta nhi hon .bhai meray mjy 3 dino sy ak masla darpaish hai .masla yeh hai k ab mai jb system on karta hon to hardisk read nhi kar raha . aur baaz aokaat read kar laita hai aur system on hojata hai mai nai kal raat ko fresh window bhi karli pher bi masla wohi same 2 same hai.ab suba sy try kr raha ta abi kahin ja kar system on hwa hai.jaisy hi system on karta hon tu system ki kali screen par boot search karta aur media test failure a kar (non-system disk or disk error) ajata hai.yeh kis waja sy hardisk read nhi kar raha aur yeh q hota hai.kindly mera yeh masla jald hal karny ki kosis kary plz.