Advanced Troubleshooting 49No memorymodules aredetected.• Reinstall all memory modules (seepage 70) and then restart the computer.• To eliminate the possibility of a faultymemory connector, remove all memorymodules, install one memory module (ifthe system supports a single module),and restart the system. Then move thememory module to another connectorand restart the system.• If the problem persists, contact Dell(see page 84).PCI bus failure hasoccurred.1 Determine if a conflict exists byremoving a card (see page 66) and thenrestarting the computer.2 If the problem persists, reinstall the cardthat you removed, remove a differentcard (see page 66), and then restart thecomputer.3 Repeat this process for each card. If thecomputer starts normally, troubleshootthe last card removed from thecomputer for resource conflicts (see"Resolving Software and HardwareIncompatibilities" on page 54).4 If the problem persists, contact Dell(see page 84).Video controllerfailure.• If the problem persists, contact Dell(see page 84).Diagnostic Code Definition Corrective ActionG Y Y YA B C DY G Y YA B C DY G Y GA B C D
