As we understand, you WiFi connection is dropping randomly. Please consider the following actions that may help in this case:
- Apply the configuration indicated in the following document: Wireless Networking — What are the Recommended Settings for 802.11n Connectivity?
- Contact the Computer Manufacturer Support and obtain their most recent drivers. Intel recommends using OEM drivers whenever possible, as they may include customizations required by your PC.
- As second option, try the Intel® PROSet/Wireless Software for Windows 8.1*, version 18.21.0.
- Check with the manufacturer of you Wireless Access Point and make sure you are using the most recent firmware for it.