Actually, I found a solution to this problem. I have never encountered this problem since I did this (2 Weeks). Before that I had en countered this problem a couple of times in a day. My wifi driver is Intel 7260-N
- Plug your ethernet cable and disable your wi-fi. DO NOT OPEN YOUR WIFI ADAPTER ON YOUR COMPUTER UNLESS EVERYTHING HAS FINISHED!
- Download your latest wifi driver from downloadcenter.intel.com
- (This is the most important part) Uninstall your old wifi driver, but if you just install it once it wont unistalled completely because windows will use previous drivers that you installed before even you install the new ones. So Click uninstall again and again, until you see only one microsoft wifi driver and one intel driver (windows won't let you to uninstall these two).
- Restart your computer (AGAIN, DON'T ENABLE YOUR WIFI ADAPTER!! IF YOU ENABLE IT WINDOWS WILL AUTOMATICALLY USE THE OLD ONES!)
- After restart, install the driver that you downloaded. After the install process, open device manager, network adapters, right click intel wireless-n 7260 and click properties, click advanced tab and make u-apsd support disable and also ht mode disable. Click OK.
- Restart your computer.
I hope it works.