What is the code for the motherboard detection card?

Show FF or 00,CPU not working ATX Power damage

CPU foot solder joint because of long time thermal expansion and contraction, off welding

Electrolytic capacitor burst near the CPU

Power transistor near the CPU burned

Code: FF, 00, C0, D0, CF, F1, or nothing indicates that the CPU failed

C1, C6, C3, D3, D4, D6, D8, B0, A7, E1 represent memory but

24, 25, 26, 01, 0 A, 0B, 2 A, 2B, 31 indicate video card but

Some integrated graphics boards 23, 24, 25 for normal lighting, some via chipset display 13 indicates that can be lit, some brands in the motherboard display 0B is normal, some motherboards show 4E is normal to light, some Intel chipset motherboards display 26 or 16 to indicate that they can be lit normally.

C1, C6, C3, 01, 02 This combination cycle jump is mostly i/0 bad or brush bios

If the display 05, ED, 41 directly brush the BIOS

First, the motherboard detection card each LED description

BIOS lights: For the BIOS to run the lights, the normal work should be flashing

CLK lamp: For clock light, normal for illuminated steady

OSC lamp: For the reference clock light, normal for illuminated steady

Reset lamp: For the reset lamp, normal for the power-on instantaneous flash, and then extinguished

Run lamp: For running lights, work should keep flashing

+12V, -12v, +5v, +3.3v lamp normal for illuminated steady

Ii. Common Code overhaul

1, 00, CO, CF, FF or D1

Test the BIOS Chip CS has no film selection:

(1), there are film selection: Change the BIOS, test the BIOS is effective, testing PCI AD line, measuring CPU reset has no 1.5v--0v jump

(2), no film selection: Measuring the frame of the PCI, measuring the CPU Dbsy ads#, if not normal North bridge bad, if the frame cycle signal is not normal South bridge bad

2, C0

CPU slot dirty, bad pin, bad contact

Switching power, swapping CPUs, swapping cards can sometimes solve problems

Brush bios, check BIOS seat

I/O bad, North Bridge virtual welding, south weak bridges bad

PCB disconnection, the board is glued to the conductive material

3, C1, C3, C6, A7 or E1

Bad memory contact (use tweezers to draw memory slot)

Measured memory operating voltage SDRAM (3.3V), DDR (2.5 and 1.25V)

Measuring Clock (CLK0~CLK3)

Whether the CPU side resistance is damaged

Measuring CPU address lines and data lines

Load-resistance and data-blocking of DDR measurement

Bei Qiao Bad

4, c1~05 cycle jump

Test 32.768MHZ is normal

BIOS damage

I/O or South Bridge is damaged

5, C1, C3, C6

Brush bios, check BIOS seat

Switching the power supply, changing the CPU, and switching cards can sometimes solve the problem

PCB disconnection, the board is glued to the conductive material

Swap memory strips, PC100, PC133, or faster and more stable memory

Swap memory slots, some of the motherboard's memory slot to first plug in the most or the most out of the slot to work

Visual memory slot whether there is a short-circuit and other mechanical damage phenomenon

No memory CLK0, CLK1, CLK2, CLK3, CLK4, memory main power supply

Check if there is a break in the resistance

Change I/O chip, North Bridge virtual welding or North bridge bad

6, loop display C1-C3 or C1-C5

Brush bios

Swapping I/O sometimes solves the problem, checking I/O peripheral circuits

PCB disconnection, the board is glued to the conductive material

Switching power, swapping CPUs, swapping memory

South Bridge Bad

7, other code

Brush bios

Switching power supply, CPU, memory

Check I/O peripheral circuit, change I/O chip

PCB disconnection, the board is glued to conductive material, South Bridge bad

8, Bo Code

Measured memory data load voltage 1.25V, 2.5V (DDR)

Clear CMOS

Measuring North Bridge power supply or North bridge bad

9, 25 code

Measuring AGP Core power supply 4X (1.5V), 8X (0.8V), 2X (3.3V)

North Bridge power supply, North Bridge bad

10, go od after not bright

Measuring resistance and exclusion between PCI slots

FSB, double frequency jumper

11, if the display of OB monitor is still not lit

Changing the video card, sometimes the motherboard is incompatible with the video card

Switching power, swapping CPUs, swapping memory

Swap card slots, PCB disconnection, the board is glued to conductive material

Brush bios

Change I/O

Check North Bridge, power supply, or bad

Check the resistance and capacitance near the PCI and AGP slots

12, display 2d code

To measure the ad line of an AGP

Initialize INTR signal

North Bridge power supply is not normal or North bridge bad

13, display 2d code unchanged

Brush bios

Bad Clock generator

Clear CMOS

North Bridge power supply is not normal or North bridge bad

14, display 50 code

I/O power supply or I/O chip bad

South Bridge power supply or South bridge bad

Bad bios, North Bridge bad

15, show 41

Brush bios

A18 jumper

PCB disconnection, the board is glued to the conductive material

I/O bad, South bridge bad

Error code: (FF)

Code implication: motherboard does not have normal self-test

WORKAROUND: This failure is more troublesome because the motherboard or CPU is not working properly. Generally encountered this situation, you can first of all the computers in addition to the CPU all parts removed, and check the motherboard voltage, frequency and FSB settings are correct, and then to the CMOS discharge processing, and then boot detection failure to exclude. If the failure is still, you can also remove the CPU from the motherboard socket, carefully clean the socket and its surrounding dust, and then the CPU installed, and a certain pressure to ensure that the CPU and socket contact close, and then the heatsink installed properly, and then the power-on test. If the failure persists, the CPU test is recommended for replacement. In addition, the motherboard BIOS damage can cause this phenomenon, if necessary, you can refresh the motherboard bios and try again.

Error code: 01

Code implications: Processor Testing

Workaround: The CPU itself does not pass the test, you should check CPU related devices. If you have overclocking the CPU, restore the CPU frequency to the default frequency and check that the CPU voltage, FSB, and frequency multiplier are set correctly. If all normal failures remain, you can replace the CPU and try again.

Error code: C1 to C5

Code implications: Memory Self-Test

Workaround: A more common symptom, which generally indicates a memory failure in the system. To solve this type of failure, the memory can be carried out by dust removal, cleaning and other work to be tested. If the problem persists, try using a soft eraser to clean the part of the gold finger until the gold finger is shiny again, then clear out the clutter in the memory slot and check the metal shrapnel in the memory slot for deformation, rupture or rust. After the boot test, if the failure remains, you can replace the memory and try again. If you have more than one memory, you can use the substitution method to find the fault.

Error code: 0D

Code implications: Video Channel Testing

Workaround: This is also a more common symptom, which generally indicates that the video card detection failed. At this point should check the video card and the motherboard connection is normal, such as the discovery of the phenomenon of graphics card loosening, should be in a timely manner to reinsert into the slot. If the video card and the motherboard contact no problem, you can remove the card to clean up the dust on it, and clean the golden finger part of the video card, and then plug into the motherboard test. If the failure remains, you can replace the video card test.

After the general system has been activated 0D, the display signal has been transmitted to the display, at this time the indicator led to green, and then the debug card to continue to jump to 31, the monitor began to display self-test information, then the information on the monitor to judge the computer failure

Error code: 0D to 0F

Code implication: CMOS shutdown register read/write Test

Solution: Check the CMOS chip, battery and the surrounding circuit, you can first replace the CMOS battery, and then dip the water with a small cotton ball to clean the CMOS pin and the circuit parts, and then look at the boot check whether the problem is resolved.

Error codes: 12, 13, 2B, 2 C, 2D, 2E, 2F, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 3A

Code meaning: Test video card

Solution: The Fault in the AMI BIOS is more common, can check the video card interface circuit, the main chip, memory is due to excessive dust and can not work, if necessary, replace the video card to check whether the failure to solve.

Error code: 1 A, 1B, 20, 21, 22

Code Implications: Memory Test

Workaround: The same award BIOS article memory failure solution.

Note: If you do not prompt for an error in your BIOS setup, the diagnostic card does not stop to display the fault code when you encounter a non-fatal failure, and the solution is to turn the system on after all errors are set in the BIOS setup, and then test against the debug code.