I have a darth vader psp with CFW 3.80 M33-5. last night i was playing gangs of london from my memory stick. it was playing fine. i had to leave the house for an hour, so i paused the game and left my PSP on my desk. when i came back, my PSP was off. now when i try to turn it on, the green light turns on for one second then turns off. no screen flicker or anything. it had 90% battery remaining when i left it. i have tried taking the battery out and running it off AC power. i have tried booting into the recovery menu. nothing i have tried so far has given me any luck. does anyone know what my problem could be?