Alright, you did what I did. Error 13 is a problem with the dashboard, I got it when I renamed critical system files badly (stupid move). Now since you left it unplugged, the clock has reset. In order to fix it, you need a modchip flashed with a bios that bypasses the clocksetting. D6 does, I'm not sure about the others.
Or, using a modchip/bios that supports HDD swap, you can stick in someone else's unlocked HDD, set your clock, and then fix yours by using a boot disk.
Got this from here
, but you need a modchip. I don't think you can fix this without a modchip, sorry to say.