Adding and Replacing Parts 18719 Connect your computer and devices to electrical outlets, and turn themon.20 Press to enter system setup and check the values listed underMemory Info.The computer should have changed the value of Installed Memory toreflect the newly installed memory. Verify the new total. If it is correct, skipto step 22.21 If the memory total is incorrect, turn off and disconnect your computerand devices from their electrical outlets.Return to step 1 of this procedure, but instead of installing new memory,check the installed memory modules to ensure that they are seatedproperly in their sockets.22 When the Installed Memory total is correct, press to exit systemsetup.23 Run the Dell Diagnostics to verify that the memory modules are operatingproperly. See "Dell Diagnostics" on page 123.Removing Memory (With Optional Memory Riser Cards)CAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in theProduct Information Guide.CAUTION: To guard against electrical shock, always unplug your computer fromthe electrical outlet before opening the cover.NOTICE: To prevent static damage to components inside your computer, dischargestatic electricity from your body before you touch any of your computer’s electroniccomponents. You can do so by touching an unpainted metal surface on thecomputer.1 Follow the procedures in "Before You Begin" on page 139.CAUTION: Your computer is heavy (it has an approximate minimum weight of 55lbs) and can be difficult to maneuver. Seek assistance before attempting to lift,move, or tilt it; this computer requires a two-man lift. Always lift correctly to avoidinjury; avoid bending over while lifting. See yourProduct Information Guide forother important safety information.CAUTION: The computer stand should be installed at all times to ensuremaximum system stability. Failure to install the stand could result in the computertipping over, potentially resulting in bodily injury or damage to the computer.
