Q: I charged my Ipod touch (forth generation) over night and now it won't turn back on.. like the screen just stays black.

I was at a friends house and I used her Ipod dock to charge my ipod before we left to go to her grandmas, before we left I checked it to see if it was charging and it was. So we left for a few hours and we came home and it was charged. Later on that night, before we went to bed I put my ipod on the SAME charger I used earlier that day. I woke up in the morning and tried turning it on and the screen stayed black so I paniced and put it on the charger some more and notcied the screen stayed black. We looked up what to do on the internet and it seems a lot of people were having this problem as well. Some of the people said to hold the home and power button at the same time and the apple sigh will appear and your ipod will be good again.. we tried that and nothing same black screen. I have no idea what to do with it and if it can be fixable.