Downloadspeed suddenly dropping massivly

[MARABEL]

Hey! I recently reinstalled windows 7 on my harddrive. After this, i have gotten a significantly big drop in internetspeed. Before, i had 20 megabytes per second. Now i am downloading at 7 megabytes per second. This is only on my desktop computer, and my laptop has just fine internetspeed. Please help me!

 

[dragonoar]

Maybe it's your windows 7 updating.
Go to task manager > resource monitor and see which process is using your network.