Chosen Solution
I probably broken the lock button and i dont know how to fix it. I already opened my ipod, can anyone help me with a tutorial? thank you!
Enrico, the switch is on the logic board. Take a look at iPod Nano 1st Generation Click Wheel Button Replacement step 17 will show you where your hold switch is on the board. Take a look at your case, there should be a part that fits in the switch, check to make sure it still engages on the switch.