If its not media files then compress it with 7zip or WinRAR. If there are only some bad sectors, overwriting them should do the trick. MAYBE "chkdsk /r" does that. Otherwise, if you can find out which file has the bad sectors, overwrite that file (you can not save it anyway). The simplest way to do that is to get a "secure erase" utility and "securely" erase the file (secure erasing is nothing else but overwriting it). You mean like transistors, power cords... etc. No. ISA, gate A20, many ridiculous timers and many more, that will only make your head hurt