Pops up settings, where you can easily get to the Windows settings screen or shut down the PC.

Brings up the Simple Start menu, allowing easy access to key system-management apps, like the control panel.

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When you initially set up Windows 8, network drivers were installed and started. (If not, you'll need to install a network driver.) But that's just the first step. Assuming you have other PCs, you'll need to connect your Windows 8 PC to your existing network.