meray pass aik Laptop hay uss par window vista genuine install thee manay uss ka backup bana k uss par window 7 install kar di hay mager C drive ko format nahi kiya aor windo vista ka folder uss may windows old k naam say hay mujhay ye puchna hay k ager may c drive format karta hon to kiya uss backup k dvds say may windows vista phir say install kar sakta hon?