xlost4 on 29 December 2009
Not to be a dick but your PSP is 2000 which in this case is a PSP Slim not a "2001" those do not exist 
And to help you out, I would open the PSP case and clean the disc that way if your PSP isn't spitting out a error code then its not the PSP hardware itself but the disc. After cleaning it and the problem still exists take the game back and get an exchange for another.
Edited: Blank post forgot to add
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