Dell OptiPlex 3040M Series Owner's Manual

Also see for OptiPlex HUB: Owner's manual Quick start guide Owner's manual Troubleshooting guide Setup guide

3. Disconnect all network cables from the computer.4. Disconnect your computer and all attached devices from their electrical outlets.5. Press and hold the power button while the computer is unplugged to ground the system board.6. Remove the cover.CAUTION: Before touching anything inside your computer, ground yourself by touching anunpainted metal surface, such as the metal at the back of the computer. While you work,periodically touch an unpainted metal surface to dissipate static electricity, which couldharm internal components.Turning off your computerCAUTION: To avoid losing data, save and close all open files and exit all open programs beforeyou turn off your computer.1. Turning off your computer:• In Windows 10 (using a touch enabled device or mouse):1. Click or tap .2. Click or tap and then click or touch Shut down.• In Windows 8 (using a touch enabled device):1. Swipe in from the right edge of the screen, opening the Charms menu and select Settings.2. Tap and then tap Shut down• In Windows 8 (using a mouse):1. Point to upper-right corner of the screen and click Settings.2. Click and then click Shut down.• In Windows 7:1. Click Start.2. Click Shut Down.2. Ensure that the computer and all attached devices are turned off. If your computer and attacheddevices did not automatically turn off when you shut down your operating system, press and holdthe power button for about 6 seconds to turn them off.After working inside your computerAfter you complete any replacement procedure, ensure that you connect any external devices, cards, andcables before turning on your computer.1. Replace the cover.CAUTION: To connect a network cable, first plug the cable into the network device and thenplug it into the computer.2. Connect any telephone or network cables to your computer.3. Connect your computer and all attached devices to their electrical outlets.4. Turn on your computer.6