take out the battery and put it back in.
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Bring your PSP to a game store (like Gamestop) and ask them to fix it.
delete the data and puted in your psp
Go to the repair shop that it can fix your psp. If you don't see one find someplace else
Charge it...
Yes. However, if you dont know what you are doing, you WILL BREAK your psp, with no way to fix it. Be careful.