I downloaded the Karmic image, checked it with MD5. Fine. Then put in in, booted it to the menu, and selected 'Check disc integrity'. Fine.


Then I try to boot from the LiveCD, and when it gets to logging in the screen starts moving and flickering, and eventually goes all white and grey.

Safe graphics mode just gets me a terminal, but I can't type anything as it's flickering too.

Help?!