72 - Frequently asked questionsTroubleshootingThis chapter shows you how to deal with common system problems.Read it before calling a technician if a problem occurs. Solutions tomore serious problems require opening up the computer. Do notattempt to open the computer yourself; contact your dealer orauthorized service center for assistance.Troubleshooting tipsThis computer incorporates an advanced design that deliversonscreen error message reports to help you solve problems.If the system reports an error message or an error symptom occurs,see "Error messages" below. If the problem cannot be resolved,contact your dealer.Error messagesIf you receive an error message, note the message and take thecorrective action. The following table lists the error messages inalphabetical order together with the recommended course of action.Error messages Corrective actionCMOS battery bad Contact your dealer or an authorized servicecenter.CMOS checksumerrorContact your dealer or an authorized servicecenter.Disk boot failure Insert a system (bootable) disk, then press<Enter> to reboot.Equipmentconfiguration errorPress <F2> (during POST) to enter the BIOSutility, then press Exit in the BIOS utility toreboot.Hard disk 0 error Contact your dealer or an authorized servicecenter.Hard disk 0extended type errorContact your dealer or an authorized servicecenter.I/O parity error Contact your dealer or an authorized servicecenter.FRE Q UEN T LY