Lenovo K23 Notebook - Manual (Page 121)

Appendix E. Notices
107
For Windows 7:
1
Click
→ Control panel.
2
Click System and Security → System.
3
Click Device Manager.
4
In the Device Manager window, expand Network adapters.
5
Right-click your network adapter device, and click Properties.
6
Click the Power Management tab.
7
Clear the Allow this device to wake the computer check box.
8
Click OK.