how do i unfreeze my ipod touch. it only have the apple logo

Try here:

iOS: Not responding or does not turn on

If not successful and it still shows the Apple logo or other indications thqat it is on, let the battery fully drain. After charging for an hour try the suff in the article again.

try restarting it by holding down the home and hold button at the same time untill the screen goes black then press the home button untill the apple logo shows up (you will not loose any data) 🙂

Tried your suggestion and it worked. Thanks