Ok, here's the problem: I just installed a 500gb hard drive into my macbook pro. Then I tried installing the osx using my 10.5 leopard disc. After getting to the installation screen, I selected my time machine as my system restore source. However my system restore source is 10.6 snow leopard disc. After restoring everything, I restart the computer and then i get the following message in 5 different languages: "You need to restart your computer. Hold down the Power button until it turns off, then press the power button again" Even after multiple restarts I get the same message. Help?