Video Camera Trouble

Alright I got a sony dcr-trv120 Digital Handycam
when I record stuff and then watch it on the camera,it messes up and the video is jumpy and the sound is messed up
when I put it on my computer the video plays like its in fast forward,anyone know why it would do this?

buy a head cleaner cassette, see if that helps.

Yeah, it's one of the best investments I have made in awhile.

thanks for the help
I might actually start to film something