meraay pass windows vista ultimate instal hay..aor hard disk 40 gb ki hay..ab main nay aik nayee hard disk 160 GB ki kharidi hay.lekin jab is ko 40GB wali hdd kay sath lagaya to yeh show nahee ho rahee..is doosri hdd per bi windows ko alehda say instal kiya aor dobara jora to phir bi show nahee ho raheee.... jab keh mother bord per do hard disks laganay ki slots mojod hain..mother bord ka no. 915 G chipset hay...aor cpu 3.2 ghz. ka hay...power supply ki dono leads bi drust hain.....pl.is ka hal koee behn//bhaeee bata daay.............bhot mehrbani