archos recorder 20 won't boot: ATA error: -11

[mangelefromage]

my archos recorder 20 with rockbox flashed on it is giving me this message when i try to boot:

ATA error: -11
Press on to debug

Does anybody know what that means? I've checked the harddrive in an external harddrive enclosure and it is good. I've also formated it. I replaced the screen a couple years ago so I've had the whole thing completely dissasembled at one point so that might have something to do with it.  

[AlexP]

I seem to remember this potentially being caused by bad battery contacts.  Have a search of the forums, I'm sure it has come up before.

[mangelefromage]

thanks...i checked out the battery contacts and the board on the bottom of the player is loose. i'll try and solder it back together.