DESK PC INTERNET KEEPS GOING IN AND OUT ON FACEBOOK GAMES, BUT DOES NOT ON ACER LAPTOP

MY DESK PC KEEPS DROPPING THE INTERNET WHEN I TRY AND PLAY FACEBOOK GAMES THEN COMES BACK BUT I AM UNABLE TO PLAY THE GAME, AND IF IT DOES LOAD THE GAME THEN IT GOES IN AND OUT DURING THE GAME, YET MY ACER LAPTOP I HAVE NO PROBLEM AND BOTH ARE CONNECTD TO THE SAME SERVER