5. TroubleshootingExpress5800/T120e Maintenance Guide28Chapter 1 Maintenance[?] Unable to start EXPRESSBUILDER from Internal Flash Memory Did you press key during POST process? Press key during displaying the following message at POST.Press Setup, Internal Flash Memory, ROM Utility, Network Is there the message, " Internal Flash Memory", displayed on POST screen? If not, make sure that Internal Flash Memory is connected correctly by referring to Chapter 2 (5. Detailsof EXPRESSBUILDER).5.3 Problem of Installing OS[?] Unable to install OS Is the Hard Disk Drive properly installed? Make sure that the Hard Disk Drive is installed securely and that cables are properly connected. Did you configure the RAID Controller? For the RAID System, use EXPRESSBUILDER or a RAID Configuration Utility (LSI Software RAIDConfiguration Utility and WebBIOS) to properly configure the RAID Controller before installing OS. Did you create a Logical Drive? For the RAID System, create a Logical Drive using EXPRESSBUILDER or a RAID Configuration Utility(LSI Software RAID Configuration Utility and WebBIOS) to install OS.[?] Unable to install Windows Have you checked precautions for installation? For installing OS, see "Installation Guide (Windows)".[?] A product key was not requested If you install using the backup DVD-ROM, entering the product key is not required. If installing using aDVD-ROM other than the backup DVD-ROM, a screen for entering the product key is displayed twice,during OS installation, and, before the MICROSOFT SOFTWARE LICENSE TERMS dialog box, whichdisplays after OS installation. Follow the on-screen instructions to enter the product key.[?] The following devices are indicated as faulty devices in a Windows Server 2012 Server Core installationenvironment SM Bus Controller There is no operational problem.[?] The keyboard or mouse does not work When the keyboard or mouse is connected to the port that supports USB3.0 this error occurs. It is not afailure.Connect them to the USB 2.0 port.See Chapter 1 (4. Names and Functions of Parts) in User's Guide.