92 TroubleshootingBA C K U P Y O U R F I L E S I M M E D I A T E L YUSE A VIRUS -SCANNING PROGRAM TO CHECK THE HARD DRIVE, FLOPPY DISKS , OR CDSSA V E A N D C L O S E A N Y O P E N F I L E S O R P R O G R A M S A N D S H U T D O W N Y O U RC O M P U T E R T H R O U G H T H E ST A R T M E N USC A N T H E C O M P U T E R F O R S P Y W A R E — If you are experiencing slow computerperformance, you frequently receive pop-up advertisements, or you are havingproblems connecting to the Internet, your computer might be infected withspyware. Use an anti-virus program that includes anti-spyware protection(your program may require an upgrade) to scan the computer and removespyware. For more information, go to support.dell.com and search for thekeyword spyware.RU N T H E DE L L DI A G N O S T I C S — If all tests run successfully, the error conditionis related to a software problem (see "Dell Diagnostics" on page 75).Memory ProblemsFill out the "Diagnostics Checklist" on page 131 as you complete these checks.CAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.IF Y O U R E C E I V E A N I N S U F F I C I E N T M E M O R Y M E S S A G E —• Save and close any open files and exit any open programs you are not usingto see if that resolves the problem.• See the software documentation for minimum memory requirements.If necessary, install additional memory (see "Memory" on page 116).• Reseat the memory modules to ensure that your computer is successfullycommunicating with the memory (see "Memory" on page 116).• Run the Dell Diagnostics (see "Dell Diagnostics" on page 75).IF Y O U E X P E R I E N C E O T H E R M E M O R Y P R O B L E M S —• Reseat the memory modules to ensure that your computer is successfullycommunicating with the memory (see "Memory" on page 116).• Ensure that you are following the memory installation guidelines (see"Memory" on page 116).• Run the Dell Diagnostics (see "Dell Diagnostics" on page 75).