If your iPod touchscreen stops working, the best thing to do is to wash your hands and clean the iPod screen just to make sure it isn’t due to oil or dirt that is keeping the touchscreen from working. If it still won’t work, restart it. If restarting your iPod doesn’t work to fix the problem, restore your iPod to factory settings. You will want to make sure you have all your data backed up to iTunes or iCloud first because you will lose it on your iPod. You can restore your data from your back after you have restored the iPod. Finally, if nothing else has worked, you might have to have it replaced or repaired.