The w39ncpa.dll file is a Coinstaller and NCPA (Network Control Panel Applet) 32 bit DLL belonging to Intel PRO/Wireless 3945 Network Connection from the Intel Corporation. A Colnstaller is a piece of software that assists with the installation of other software on Windows. This file is used to help with network devices and functions. Errors with this file may cause network instability and limit your ability to connect via a wireless connection. You should clean your registry to fix this problem.
Registry errors can break the programs on your computer because Windows relies on the information in the registry to find the files and settings it needs. If the data is incorrect, the programs won’t run. You can fix registry errors with ZookaWare PC Cleaner. Our unique guarantee means that even if the first run-through doesn’t fix your problem, you’ll get an update that does within 24 hours. Try a free ZookaWare PC Cleaner scan now and see a list of the problems in your registry.