My game boy color doesn't start games..but in a weird way

I had this problem for a while now and I can't seem to find a way to fix it. When I insert a game in my game boy color and turn it on,it seems to be good,you know ; you see the game boy logo appear with that classic sound and the nintendo logo under it.But it just freezes after the sound and it doesn't start the game.I tried with all my games (all my games are working on other gameboys) and I oppenned it trying to find something unusual, but nothing! I also searched all over the internet but still nothing here...

Does somebody have the same problem like me? Or can someone solve the problem?

Thank you for helping :-)