PSP Problem - NOOB

[cj8o8]

Sorry every1, u guys probably heard of this problem already before.
Anyways, I recieved my Pandora Battery in the mail today. I have a Sony 4G Memory Stick Pro Duo. I used the MMS Maker 5-00 + Eboot program to format my MS. I put in my Pandora battery while holding the L trigger but nothing happens. Just a black screen. My memory stick led doesnt even light up or blink. Can any1 help me pls?

This is a phat psp 1001
I had it upgraded to the official 5.03 version, before i started on trying this project.
I did the following incase this will help finding out what is wrong.
-Tried to make a Hard Mod with my factory battery but messed up, so I ordered a pandora battery.
-I did not hook up the psp to my comp to format my memory stick with the program. I used a memory stick slot on my printer (could this be the case). I didn't have a spare battery to turn on psp exept my pandora.