Assalam o alaikum ,

friends, mere pass computer main 500GB ki hard disk lagi hui hai, or windows 10 kafi problem kar rahi hai, koi app nhi kholta yahan tk photos bhi nhi khul raha, or system hang hony lagta hai.khas kar chrome . is lye main ne socha k windows 10 dobara karlon ya win 7 kardon, magr masla data ka hai, data mera takreeban 350-400GB ka hai, is main important files and tutorials wagera hain, jo k bari mehnat se ptcl k maray hue 1mb-2mb net se download kara hai 8-9 mahiny main , jo k main kisi sorat delete nhi karna chahta..
is lye meri rehnumai karen k main secondary hard disk konsi lon internal 1TB ya external 1TB segagate ya western digital . or kis trah use karon ,
new internal hd per window karon ya purani wali per hi karon or data new main rakhun ,
ya phir portable / external hdd le lon. external or secondary dono ka mujhe experience nhi ,
is lye jaldi reply de den experts, kion k system hang horaha hai. or mujhe data ki fikar hai..
mera system dell t3500 hai, 500gb hdd , 12gb ram, 2.8 core 2 duo,1gb graphics, 2 hard disk lag skti hain, abhi 1 hi hai. or dosri kaisy lagy gi, bios main kch setting karni hai ya auto chalegi , please guide me, I have no knowledge about hardware.