Ipad2 keeps restarting..

This seems to be a common complaint. But here we go, I have an Ipad 2, it is no longer under warranty. Everytime I try to open anything (except angry birds for some reason), the app acts like it will open for a second or two, then restarts, including the apple logo. I try to hook it up to Itunes to do a system restore but it says its already in the middle of doing so and the ipad restarts again. I cannot even go to settings on my Ipad to do an erase because it just keeps restarting. Since my Ipad is no longer under warranty, I can't go to an Apple store either.. If anyone could help I would love it!