General network congestion is caused by the network card, generally we can disconnect the network once again the OK, then use the router to achieve this effect? Here are a few ways to do this, and you can fix it quickly.
This is the most common way to disable local connections and re-enable them. The way to do this is to click on the web link in the lower right corner of the desktop and then pop up the interface and click "Open Network and Sharing Center."
Click "Local Area Connection" next
Then click Disable again after you open the local link, and then click Enable again when disabled becomes enabled.
Second, we'll introduce a way to disable the NIC and re-enable it. The practice is to click the Computer icon to select administrative options. Then click Device Manager to expand the network adapter, the last double click on the card can be opened. Then start switching to the driver option and click Disable. As with the previous method, click Enable when disabling becomes enabled.
The last method is to restart the router, which is commonly used is also one of the best way to effect. The specific approach is to enter the interface of the router, in the System tool to click Restart the router
Then click the Restart Router button on the right window to restart the router.