Hello i have a psp 1001 fat model. I was playing a iso FF1 on the psp and then I turned the power off and pulled the msd card out and put some thing on it and put it back in the psp and tryed to turn it on all I get is the green light just sits there never goes off or on? Any help

Auto-Merge: Never mind problem seamed to be the battery. I pulled it out and it booted with no problem.... what happen to it and how do i fix this problem?