After getting my "moody PSP" on, I went to play Kingdom Hearts BBS as normal. It worked just fine the first time, but now, whenever I try to boot any game, it just gets stuck at the PSP screen for about a minute, then turns off.. Could this be a CPU speed issue? It's worked plenty of times before, what could be wrong with it now?

I can even play Homebrew and read Digital comics just fine, it's just that when it comes to the games, nothing.