Dell OptiPlex GX400 User Manual

Also see for OptiPlex GX400: Setup and quick reference guide Service manual Setup and quick reference guide

Contents

Dell OptiPlex GX400 User Manual Manual pdf 61 page image

IRQ2 Used by interrupt controller 1 to enable IRQ8 through IRQ15IRQ3 Used by serial port 2IRQ4 Used by serial port 1IRQ5 AvailableIRQ6 Used by the diskette/tape drive controllerIRQ7 Used by the parallel portIRQ8 Used by the real-time clock (RTC)BIOS Recovery UtilityIf your system loses power and beeps constantly but does not boot when power is restored, the basic input/output system (BIOS) is probably corrupted. Torestore the BIOS, perform the following steps:1. Disconnect the system from its power source.2. Go to another working system, and download the BIOS flash executable utility for the system from the File Library located on the Dell support websiteat http://support.dell.com.3. On the working system, go to an MS-DOS prompt and type the command xxxxx -writehdrfile (where xxxxx is the name of the BIOS flash executableutility you downloaded).Running this utility generates a file with an .hdr extension.4. Copy the .hdr file to a diskette.5. Insert the diskette into the diskette drive of the corrupted system and turn it on.The system automatically flashes the BIOS from the diskette.6. When the system begins to restart and the Dell logo screen appears, remove the diskette from the diskette drive so that the system does not bootfrom the diskette again.Back to Contents PageIRQ9 Used by the advanced configuration and power interface (ACPI)IRQ10 AvailableIRQ11 Used by the USB controllersIRQ12 Used by the mouse portIRQ13 Used by the math coprocessor (if applicable)IRQ14 Used by the primary IDE controllerIRQ15 Used by the secondary IDE controller