here are some phases for you
1: download yourself, if there is a problem
2: ask help on the internet or website, if this dont work then
3: ask help from a staff, if this dont work then
4: ask your sibling(or if you have one) or dad to help you download, if this dont work then im afraid but
5: SEND YOUR COMPUTER TO GET FIXED AT A SHOP!!! hope this helped! ^^