36 About Your SystemMore than one RACdetected, systemhaltedMore than one RAC card hasbeen detected.Remove additional RACcard(s). You may only have amaximum of one RAC cardinstalled (see "Installing aRAC Card" on page 106).No boot deviceavailableFaulty or missing opticaldrive subsystem, hard drive,or hard-drive subsystem, orno bootable USB keyinstalled.Use a bootable USB key, CD,or hard drive. If the problempersists, see"Troubleshooting an InternalUSB Key" on page 176 and"Troubleshooting a HardDrive" on page 181. See"Entering the System SetupProgram" on page 43 forinformation on setting theorder of boot devices.No boot sector onhard driveIncorrect configurationsettings in System Setupprogram, or no operatingsystem on hard drive.Check the hard-driveconfiguration settings in theSystem Setup program (see"Entering the System SetupProgram" on page 43). Ifnecessary, install theoperating system on yourhard drive (see youroperating systemdocumentation).No timer tickinterruptFaulty system board. See "Getting Help" onpage 205."PCI BIOS failedto installPCIe device BIOS (OptionROM) checksum failuredetected during shadowing.Cables to expansion card(s)loose; faulty or improperlyinstalled expansion card(s).Reseat the expansion card(s).Ensure that all appropriatecables are securely connectedto the expansion card(s). Ifthe problem persists, see"Troubleshooting ExpansionCards" on page 187.Table 1-6. System Messages (continued)Message Causes Corrective Actions
