I just installed Snow Leopard on a secondary hard drive. After install when I try to boot it pops up the apple logo and has the circle spinning underneath for a few seconds, the screen then goes white and stays that way for a minute before a few random lines show up and then disappear. this is all that happens, after 15 minutes I shut down and dropped my windows 7 drive back in so I could post this

I am on a dell studio xps 1640