Please, access the Intel® Dual Band Wireless-N 7260 configuration via device manager, select Network Adapter, right click on the adapter and select Properties.
When the dialog box pops up, select the Advanced tab and select the option that says 802.11n Mode and then set the Value to Enabled as shown in the picture below.
You are becoming really annoying with your off-topic response!!! You give the same response to all the topics regarding the wireless n problems in different chips!
You always give the same screenshot from a different chip dude!!!!! WTF?!?!