Sony Playstation 3 (PS3) Console "moove" Questions

I have playstation 3 and when i turn the main power on ,then it loads the ps3 logo with sound ,but just after that only some almost blue screen is on backround and some white wavy mooving line or ...

evry time im playin a game it comes up on da top of da screen connection interupted and then the player mooves everywere but only on call of duty it hapends with call of duty on most peoples xboxs