I went through the steps listed on http://www.ubuntu.com/download/ubuntu/download but it does not work. I start up my Toshiba Satellite laptop and press F12 to pull up the boot menu. I select my USB drive and the screen goes black for a few seconds as if it is loading up. There is a quick flash followed by a black screen for a few more seconds and finally ending with the system shutting down. I can still access the BIOS and the boot menu, but I can no longer start up in Windows (system resume nor system recovery).
Edit: I'm not 100% positive but I believe this is my laptop model - http://www.toshibadirect.com/td/b2c/retail-product.jsp?poid=452488