Black screen while loading game.

Hello, Okay i have a really annoying problem and i know many people have this too...
So when im loading a game it loads to 25% then after a couple seconds my screen gets black i can only see my mouse then after 1 minute or so , the loading is resuming so i have to wait like 6-7 minutes to play a game and when im alt + tabbing to get on my explorer i takes a while too my ping is 15 - 16 in game so i dont really think its about my computer

My screen is 1680x1050 if any one could help me with this it would be a pleasure !!