I try to install itunes and a window pops up and says itunes has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. When i try to transfer pictures from my

i try to install itunes and a window pops up and says itunes has stopped working A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. Also when I try to transfer pictures from my ipad 2 to my computer an error message comes up in an Itunes window and says iTunes has stopped working A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. I think I accidently deleted a video component from my program. I also cannot copy a dvd/cd anymore.

Help Please