Sony PlayStation Portable (PSP) Slim (PSP-2000) Console "orginial" Questions

...work(I also put the battery pack from my sons into my daughters psp) then replaced it back with her orginial one and now it will not turn on unless she plugs it into the outlet, what do I have to do ...

...back of my xbox 360 pro it does not recognize the hard drive. what am i doing wrong? do i need the orginial hard drive for this one to work? I'm so lost i don't know what to do. Your problem is the ...

... it will load just before the menu and display disc error. It will play some games such as Wii Fit (orginial). Some games it won't load at all - just shows disc spinning on screen as it tries to load ...