Q: Question mark file

So earlier today i wanted to restart my macbook air (late 2010) so i erased the disks and now im stuck with a white screen and a flashing folder with in it when ever i normally turn it on, i can only get to internet recover not normal recover and when i do and look at the start up disks its blank, and when i try to re install the os x lion 10.7 it gets as far as me typing in my apple id then says currently unavailable please try again later, also when i go to disk utillity i do not see the Macintosh hd! Is there anyone that could help me i just want to use my laptop again!!!!