Debian problems

[Stephen Pruitt]

hi i have 2 issues i would like your help with i just installed Debian 7 i
whose using microsoft windows 7 and i back up the files on to a USB and i
would like to know how to reinstall the files.i also tried to install a
video game and it would not install when i try to install i got a could
knot auto run message could you please tell me how to do these things