[header] How to fix a white screen on an ipod [title] Let your device turn itself off. [step] This means you shouldn't be seeing the apple logo on the screen, rather it should just be black. If you must, wait until the screen turns off. 
[substeps] If your device won't turn off, let the battery run dead. This may take a few hours, but if your phone is no longer responding to button use and won't turn off, it is the best option.