20Solving ProblemsMemory ProblemsIf you receive an insufficient memorymessage—Save and close any open files and exit any•open programs you are not using to see ifthat resolves the problem.See the software documentation for•minimum memory requirements. Ifnecessary, install additional memory(See the Service Manual on the Dell Supportwebsite at support.dell.com).Reseat the memory modules (See the• ServiceManual on the Dell Support website at support.dell.com) to ensure that your computer issuccessfully communicating with the memory.If you experience other memory problems —Ensure that you are following the memory•installation guidelines (see the ServiceManual on the Dell Support website atsupport.dell.com).Check if the memory module is compatible•with your computer. Your computer supportsDDR2 memory. For more information about thetype of memory supported by your computer,see “Basic Specifications” on page 38.Run the Dell Diagnostics (see “Dell•Diagnostics” on page 25).Reseat the memory modules (see the•Service Manual on the Dell Support websiteat support.dell.com) to ensure that yourcomputer is successfully communicatingwith the memory.Lockups and Software ProblemsIf the computer does not start up — Ensurethat the power cable is firmly connected to thecomputer and to the electrical outlet.If a program stops responding — End theprogram:Press simultaneously.1.Click2. Applications.