HT3964 my computer displays only a blue light on the screen after booting (and rebooting)! How can I fix this?

There is a blue light on the screen of my mac book pro and the computer will not display anything! Does anyone have any advice/recommendations!?

For Safari you could try clearing its cache and history via Settings > Safari.
For Safari and your other apps you could close them all completely and then see if they work when you re-open them : from the home screen (i.e. not with any app 'open' on-screen) double-click the home button to bring up the taskbar, then press and hold any of the apps on the taskbar for a couple of seconds or so until they start shaking, then press the '-' in the top left of each app to close them, and touch any part of the screen above the taskbar so as to stop the shaking and close the taskbar.
If that doesn't work then you could try a reset : press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

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