I threw away my intel 7260N. It was utterly useless. That piece of junk would disconnect ever 5 min (with the latest driver). I now have a 7260 AC (not by choice, BIOS whitelisting forced it on me). But at least now, I get connection for 2 days b4 dropping.
The lifetime warranty from intel is garbage! They claim I should go to my mfg and the mfg says warranty is expired. So in the end, I hate Lenovo and I hate Intel. Both are cheap company. I will go AMD and broadcom or realtek on my next comp. Oh and Lenovo will never get my $ again.