Hello, the problem is that after reinstalling the operating system, fell the speed of data transmission over Wi-Fi. The contract provider provides me with Internet speeds up to 100 Mbps, it is clear that the main thing there before, but nevertheless, on the downloading torrent is holding steady 7-8 MB/s, and sometimes all 10. Now the situation is that on the laptop the download speed maximum 5Mb/s and so 4 - 4.5. Although desktop PCs are fine. The laptop is located at a distance of 30 cm from the router, up to several meters. And there was a need to temporarily replace the wifi module and both of them show the same result at 4-4.5 MB/sec. Router if TP-Link WR841ND, which accommodates up to 300 Mbit/s Wi-fi Modules Qualcomm Atheros QCA9565 and AR5B195. Also apply the results check the speed of your connection. What could be the problem?