Music help needed asap? computer crashed.?

Okay so my computer crashed and i lost all of my photos music etc. then two weeks later my ipod crashed and i just finally got my replacement but still have little music on my itunes. I listen to thigs like My chemical romance, flyleaf, ozzy osborne, guns n roses, bullet for my valentine, afi, owl city stereo skyline, ect. I need good bands for someone whos 17 help please give some band names.