Please help me with this issue! I bought dell inspiron 15 with windows 8 installed for my son. It was running fine but after couple months got slow (he might have got a virus on it) so I want to reinstall it back to the way it was before. When I try to remove everything and reinstall windows after I click get started and next it gives me could not find the files needed and if you have a windows installations or recovery media, insert it and restart PC from the media. Well Windows 8 was already on it - I got dell new from amazon and I don't have a cd or even a product key for the windows what can I do?