I don't know how to call this problem so i just said brick...
My phone turns on...everything is okay, but i can't start the Maemo or Nitdroid, and when i try USB connection, the usb icon in the top left corner shows up but only for a 2sec or 3.

Then the penguin shows up "uboot" etc...

By the way, when i plug in the charger it starts to charge but the phone turns on by itself and turns off by itself, the phone turns on when i plug in the charger or USB cable, the phone turns on without any backlight on the screen, i see Nokia logo for 1 second and then i see uboot. So i'm asking how can i repair this, should i buy the memory card reader and format or...? I currently see no way out.
I'll let it charge for a while then i'll see if something can be done. PC does sign the phone has been connected too.

Sorry for bad english.