I have a white 2007 MacBook, 2.16 GHz, 3GB RAM. It was happily running OS X.6.1 for a while but a friend borrowed it and left a lot of rubbish on it, so thought I'd reinstall Snow Leopard and then up to Lion again. Tried OS X.5.1, X.6, & X.6.3, all Apple original DVDs.
After they say "Installed successfully", when I must input info: name, address, postcode, phone No., where will the computer be used?, job description etc. click is held continuously and I get the spinning ball and the machine hangs. Any ideas?