Hold the lock button and the home button down until the screen goes black and your device should hopefully reboot.
It's the white screen of death you can't eliminate death.
You wait until the battery runs out. At least that's what i do...
my nokia 2720 on and white screen
.................................................................................Remove it
Unfortunately, the only way to get rid of the blue screen of death is to get a new hard drive.
Try RegCurePro
When this happens you must refresh the page so that Runescape can reconnect. I call it "The White Screen of Death," because there is no hope of continuing the game normally until you exit the page and reload (or refresh). It can happen to anyone.
yoou click export data file and then you turn off computer and restart
To fix the iPod Mini white screen of death, press the home button and volume up button. While still holding these, press the power button. Continue to hold until the Apple logo appears.
you need to get rid of the virus with a backup cd then you retrieve the files
Bring it to a nearby Nokia Care Centre for repairs.
Let your ipod run out of battery completely then charge it again. It takes a while but its worth it, just leave it alone :)