My mac fell and won't work

Guys I need serious help I'm so desperate. I bought my Mac mid 2012 3 weeks ago and yesterday I accidentally dropped it. So it was on white screen and apple logo and it would never end booting so I decided to go to disk utility and try to repair disks but nothing would help, every time I tried fixing it an "couldn't fix disk" message appeared now and I deleted my hd machintosh info. Then tried reinstalling the OSX but it never finishes downloading. When I try to fix disks it doesn't let me. Please help . I'm aware Apple won't help me because I dropped it