i was wondering about the best way to completely wipe an hdd drive (due to a virus locking my pc) at the lowest price or preferably free but i want to know for sure that is is 100% wiped. please leave me links to LEGIT SITES. (i got my virus right after boot up looking for free drivers to update some stuff in my pc) also do i just redownload windows 7 just like how i did it the first time does it still work? thanks