【正文】 Press F2 to enter SETUP39。 Parallel Ports and Game PortEntered protected mode. Enabling interrupts for diagnostics mode next.44Reserved Interrupts enabled if the diagnostics switch is on. Initializing data to check memory wraparound at 0:0 next.45Detect and Initialize Math CoprocessorData initialized. Checking for memory wraparound at 0:0 and finding the total system memory size nextPOST device initialization46Reserved The memory wraparound test is done. Memory size calculation has been done. Writing patterns to test memory nextCheck ROM copyright notice47ReservedThe memory pattern has been written to extended memory. Writing patterns to the base 640 KB memory next.Initialize I20 support48ReservedPatterns written in base memory. Determining the amount of memory below 1 MB next.Check video configuration against CMOS49ReservedThe amount of memory below 1 MB has been found and verified. Determining the amount of memory above 1 MB memory next.Initialize PCI bus and devices CODEAwardAMI4AReservedInitialize all video adapters in system4BReservedThe amount of memory above 1 MB has been found and verified. Checking for a soft reset and clearing the memory below 1 MB for the soft reset next. If this is a power on situation, going to checkpoint 4Eh next.Quiet Boot start (optional)4CReservedThe memory below 1 MB has been cleared via a soft reset. Clearing the memory above 1 MB next.Shadow video BIOS ROM4DReservedThe memory above 1 MB has been cleared via a soft reset. Saving the memory size next. Going to checkpoint 52h next4EReboot if Manufacturing Mode。 Verify NMI Can Be ClearedThe 8254 timer test is over. Starting the memory refresh test next1ADisplay CPU clockThe memory refresh line is toggling. Checking the 15 second on/off time next8237 DMA controller initialization1Breserved1CReservedReset Programmable Interrupt Controller1DReserved1EReserved 1FIf EISA nonvolatile memory checksum is good, execute EISA initialization.If not, execute ISA tests an clear.EISA mode flag.Test EISA configuration memoryIntegrity (checksum amp。 Read CMOS location 14h to find out type of video in use.Detect and initialize video adapter. CODEAwardAMI0ETest Video Memory, write signon message to screen.The keyboard controller BAT mand result has been verified. Next, performing any necessary initialization after the keyboard controller BAT mand testInitialize I/O ponentSetup shadow RAM ?Enable shadow according to setup.0FTest DMA Cont. 0。7. As there are more and more kinds motherboard, and the code of BIOS POST is updated ceaselessly, so the meanings of error codes is just for reference。5. There is only some code displayed when you insert the card into the PCI slot on a few motherboards, but when it plugged into the ISA slot, all the code could be displayed. At present, it has be discovered that the code is displayed when you insert the card into the PCI slot of several puters which has registered trade mark, but not ISA. So You’d better try it on the other slot if the code is not displayed. In addition, on the different PCI slots of a board, some could display the code, for example, the code is displayed and goes from “00” to “FF” when you insert the card into the PCI slot, which is near to the CPU on motherboard DELL810, but if in the other slot , the code would stopped at the port “38”。 3. Code haven’t be defined is not included in the table。2. Fourbit code can be divided to two twobit codes .The one is made of the thousands digit and the hundreds digit 。FLASE ●On the back of the card ,there is a telephone number written like “086 139 2517 4332。 Judge If the all lights run normally. (The BIOS light may be on low power to sparkleAccording to the error code table, you can find the cause of the trouble and correct itYES YESJudge whether the error code that means there is a trouble with the main board is displayedNOPower off, According to the error code table, you can find the cause of the trouble and correct itPower off, insert the display card、I/O card、keyboard、hard disk drive and expansion cardsPower on, Judge whether the error code that means there is a trouble with the main board is displayedYESNOEndIf the result of the test is correct even though it can’t boot the operating system, there may be some trouble with the software or disc drive, or disk controller, or DMA circuit.Illustration of fourbit code POST card (5004 version)power onDisplay 0 testing...Error Preceding Code Code 8 8 8 8Display PCI if insert to the PCI slot, Display ISA if insert to the ISA slot,Press and hold theswitch for about secondDisplay 1 about 1 second latter code consulting Display reference speed of bus in decimalDisplay 2 test speedDisplay 3 display version numberPress and hold the switch for about secondDisplay version number5 0 0 4If the display ponent is ok, it will display fromtoFFFF F F F FDisplay 4 selftest displayponentPress and hold the switch for about secondAs long as each of 4 bits can display symbols, no matter what it displays, the POST process passed. Because of the POST content has be enhanced a lot, plenty of symbols are especial. you can pay no attention to it.8 8 8 8Display 5 RAM、ROMselftest (The display is so fast that you cannot see.)Press and hold the switch for about secondConnecting dot ⅠConnecting dot ⅡConnecting dot Ⅱ Connecting dot Ⅰpress and hold for about secondpress and hold for about seconddisplay P consulted the forward