May've bricked it?

[71m07hySm17h]

Ok, so, I run a 5.00M33 PSP Phat with all the benefits and whatnot, 4 gig memory stick, couple games on it, video, pictures, etc. Anyway, the other night I brought my PSP to a friend's house, never used it, never turned it on until late at night, and it worked and played videos fine. I get up, and don't try to turn it on until home, upon discovering, it won't turn on. The green light turns on briefly, but there appears to be no action whatsoever on the screen. From my recollection, I did not drop it and nobody appeared to have stepped on it or messed with it. What happened to it? And is there anyway I can fix it? I have a Pandora Battery if that is necessary, and it probably is. Thanks all, big props to those who offer support to a noob.

[Loonix]

You should try using the return key from time to time

In the worst case your PSP has an hardware failure.
that can happen due to air moisture or static electricity for example...
But its not very often...
Try the pandora on it.
if it does not work it is realy bad.

[71m07hySm17h]

You should try using the return key from time to time

In the worst case your PSP has an hardware failure.
that can happen due to air moisture or static electricity for example...
But its not very often...
Try the pandora on it.
if it does not work it is realy bad.

I don't have a return key, I just have this thing called an 'Enter' key  

Well I'm gonna try the Pandora on it, however I think I did already, so it may be screwed. Well that sucks, but at least I could find a phat and know how to downgrade it, thanks.