Ipod screen wont turn on will sync with itunes?

another ipod question. my ipod was on working fine. so i loaded shazam app to try it out. so i plugged in my headsets. i was planning on opening itunes to play my music to try it out. then my computer crashed (my ipod was not connected) when i tryed to log on (blue screen). and so then i was planning to hit tag in shazam to see if it would even recognize the microphone to see if my headsets even had a mic. and that was when i hit the top button to slide to unlock. but nothing loaded. just was a black screen as if it was shut off. finaly my computer booted up and i plugged in my ipod to see if it would say any error when i opened itunes but it synced just fine.

extras:

Ipod touch firmware 2.2.1 and the second generation.

ipod was turned on when i had it working, just on standby i guess you could call it so it wasnt completely shut off.

this has happend to me before but it started working fine but i forget how.

stuff ive tried.

holding the power button

volume rocker switch (dont think that helped at all)

center buton

power button and center button

holding center button

holding power and center button

holding the volume rocker switch

not tried restoring it because i dont want to go through all that again. ive done it once it is not fun adding all your apps and music again...