Guys,
I have found this game cartridge in my closet after some years of not using it, it used to work perfect before, but today when I tested it out it simply did not work, by not working I mean that I insert it in my gameboy, turned it on and the screen display the bar going from top to bottom of the screen like if there was not cartridge inserted, it is like the gameboy does not read it.
Here with a picture showing what happened when the gameboy is turned on with the game inside:
And I have taken pictures of the board itself in case you could guide me on how to troubleshoot it, I have clean it and also added a new battery but still not working.