T440s won't sleep with wireless NIC enabled

Windows 8.1 used to allow automatic sleep on battery (after idle timeout). It stopped working. It will go to sleep if manually executed, but not after the idle timeout. I've called Microsoft, Intel and Lenovo support - all COMPLETELY USELESS. After 4 days of testing and reading forums and online posts, I've determined the issue to relate to the Intel Wireless AC 7260. If the card is connected to an access point (any) the laptop will not automatically enter sleep. If I activate airplane mode or disable the wireless NIC (wired NIC no impact) the laptop will go to sleep after being idle. I have tried the driver updates, rollbocks (both Intel supplied and Lenovo), the homegroup removal (this is a domain computer never in "private network" mode anyway). Nothing has helped other than disabling the wireless nic - which is now I use the laptop 98% of the time. Any help/thoughts are greatly appreciated.

Maybe something heavier handed will work:
Download the latest Intel wifi driver package (apparently 17.0.5.8):
http://www.station-drivers.com/index.php/downloads/Drivers/Intel/Wlan/PROSet-Wireless-WiFi-Software/...
Have it saved but don't install yet.
Grab RAPR:
https://driverstoreexplorer.codeplex.com/
Enumerate and sort by Driver Class. You should find a section under Network Adapters. Check everything Intel and Network Adapter (except the one belonging to the wired NIC; identify this by the driver version). Check Force Deletion, and then Delete Packages.
Reboot and you should have no wireless driver installed. Now attempt to install the latest 17.0.5.8 drivers.
Do back up any saved wireless network passwords as this will clear that list.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

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ly click on all 8 sender loops. Doing this with and without multiple NICs enabled should show you the problem.
Note: I think the issue I was talking about in earlier posts about getting multiple strings back before it wrote out "Loop" was due to the fact that the writes were not occurring quickly enough and the reads were happening multiple times. Therefore, in these VIs, I revised the read and close timeouts to -1.
I think it would be best if you could call me so we can discuss this issue. If you can email me, I will send you my contact information if you don't already have access to it.
Attachments:
ReadSocket_Multiple_MSHv1.vi ‏360 KB
WriteSocket_Multiple_MSHv1.vi ‏216 KB

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If your Internet connection and your local network use the same port (Ethernet, for example), investigate possible side effects before you turn on Internet sharing. In some cases (if you use a cable modem, for example) you might unintentionally affect the network settings of other ISP customers, and your ISP might terminate your service to prevent you from disrupting its network.

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I saw your post regarding the problem with the Virtualization. If you have already tried disabling and updating the drivers then give us call for further options. You can reach HP Total Care at 1-800-474-6836 in North America or start here if you live outside of North America.
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Please click “Accept as Solution " if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks" for helping!
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You have 90 days of free telephone support with AppleCare, you can get started by clicking Contact Apple for support and service - Apple Support

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T440s won't sleep with wireless NIC enabled

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