Wireless connectivity offers freedom of Internet access without being bogged down with cables. Most modern Compaq Presario notebooks have built-in wireless capabilities, but some models and desktops may not. Connecting to a wireless network on such models requires adding a wireless network adapter. The easiest to install are USB types, which only require plugging into an available USB port. Windows 7 automatically installs the necessary drivers.
Purchase a USB wireless adapter if you do not have one built into your system. Plug the adapter into an available USB port, and give Windows 7 time to recognize and install the drivers for it. A notification pops up when the device is ready to be used.
Look for a wireless button on your laptop if you have a built-in wireless adapter. This button is located along the top of the keyboard and has a picture of a wireless antenna. Press the button to toggle the wireless adapter on or off. A light appears on the button when the wireless adapter is enabled and ready for use.
Click the wireless network icon on the task bar, next to the system clock. The icon looks similar to a cell phone's signal bars. Alternatively, click the square icon of the monitor. A list of available wireless networks pops up.
Click an available network, then select "Connect." Enter the security passphrase if requested. The wireless connection is established.