If your iPod Classic freezes up or otherwise misbehaves, perform a soft reset on the device. While a hard reset restores your iPod to its factory condition, a soft reset simply reboots the device's software. Unlike a hard reset, performing a soft reset on your iPod does not delete any music or other content from the device, and the iPod does not need to be connected to a computer for the soft reset to work. Use a soft reset as the first step in troubleshooting problems with your iPod.
Slide the "Hold" switch on your iPod Classic to the "On" position, then slide it back to the "Off" position.
Press and hold the "Menu" and centre buttons on the iPod Classic until the Apple logo appears on the screen.
Release the "Menu" and centre buttons to complete the soft reset of your iPod Classic.
If the soft reset doesn't work, try connecting the iPod to a wall outlet, then performing the soft reset again. If you're having trouble pressing the buttons simultaneously, place the iPod on a table or other flat surface, then use your two index fingers to press and hold the buttons.
Some customised settings may reset to an earlier state after you perform a soft reset on the iPod.