Thanks for the reply guys! Another thing i have noticed.. might just be a coincidence but its as if my pi is overheating when it wont boot, so if i try to boot it straight after shutting it down, it will show the rainbow screen.. but if i havn't used it for about 10 minutes or so it will work fine.....

Hi! I'm a complete novice when it comes to RPi, but whenever i boot up my Pi, all i get is the rainbow colour splash screen (the one you're meant to get as part of the new firmware to check the kernel is okay (Apparently!) but mine stays on.. I've left it for over 10 minutes once to see if it just n...