[Freebooter]

Can anyone please help me, My pc doesnt let me extract any big files, im trying to extract a 8gb file, ive looked on google and youtube tried everything but it still doesnt work, it just says its corrupted. Also i just got back off holiday and it randomly says my version of windows in not genuine? I have a activated windows 7 disc, shall i put that in or will i lose everything

Open the Command Prompt as a administrator and type Sfc /scannow command and post here the scan result also type Chkdsk C: /r command. You may have reactivate Windows OS. Also if the 8GB archive is damage then there is nothing to do except for re-downloading the 8GB archive also if 8GB archive is compress with .rar extension then WinRar app could repair the damage archive.