30Solving ProblemsIf you encounter interference that hindersreception on your computer — An unwantedsignal is creating interference by interrupting orblocking other signals. Some possible causes ofinterference are:Power, keyboard, and mouse extension cables.•Too many devices connected to a power strip.•Multiple power strips connected to the same•electrical outlet.Memory 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 (Seethe Service Manual on the Dell Supportwebsite at support.dell.com).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.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 52.Run the Dell Diagnostics (see “Dell•Diagnostics” on page 36).Reseat the memory modules (see the•Service Manual on the Dell Support website atsupport.dell.com) to ensure that your computeris successfully communicating with the memory.