7. Turn on the computer.As the computer boots, it detects the additional memory and automatically updates the system configuration information.To confirm the amount of memory installed in the computer, click the Start button, click Help and Support, and then click Computer Information.Memory Module DIMM A1. Follow the procedures in "Before You Begin."2. Remove the central control cover.a. Open the display all the way (180 degrees) so that it lies flat against your work surface.b. Starting at the right side of the computer, use a flat-blade screwdriver to pry up the central control cover.c. Lift the central control cover away from the computer and lay it aside.3. Remove the keyboard.a. Remove the two screws across the top of the keyboardb. Gently lift the keyboard up and out of its tabs to allow access to the keyboard connector.c. Pull up on the keyboard connector tab to disconnect the keyboard from the system board.4. If you are replacing a memory module, remove the existing module.a. Use your fingertips to carefully spread apart the securing clips on each end of the memory module connector until the module pops up.b. Remove the module from the connector.5. Ground yourself and install the new memory module:a. Align the notch in the module with the slot in the center of the connector.b. Slide the edge of the module firmly into the connector, and rotate the module down until you feel a click. If you do not feel the click, remove themodule and reinstall it.CAUTION: Before working inside your Dell™ computer, read the safety instructions in your Product Information Guide.NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of yourcomputer's electronic components. You can do so by touching an unpainted metal surface.NOTE: Memory modules purchased from Dell are covered under your computer warranty.NOTICE: To prevent damage to the memory module connector, do not use tools to spread the memory-module securing clips.NOTICE: Handle memory modules by their edges, and do not touch the components on a module.1 securing clips (2 per connector)2 memory moduleNOTE: If the memory module is not installed properly, the computer does not boot. The Num Lock and Scroll Lock lights blink about ten times.