When turned on error lights 3,4 came on with sounds, no screen or messages. Took some ram out. Boots into win xp then mouse doesn't move on screen.! fault lights 2,3,4 are on now!! Thankyou for any help
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1 short beep System is OK 2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem 1 long, 1 short beep System board problem 1 long, 2 short beeps Display adapter problem (MDA, CGA) 1 long, 3 short beeps Display adapter problem (EGA) 3 long beeps 3270 keyboard card
IBM POST Diagnostic Code Descriptions Code Description
100 - 199 System Board 200 - 299 Memory 300 - 399 Keyboard 400 - 499 Monochrome Display 500 - 599 Colour/Graphics Display 600 - 699 Floppy-disk drive and/or Adapter 700 - 799 Math Coprocessor 900 - 999 Parallel Printer Port 1000 - 1099 Alternate Printer Adapter 1100 - 1299 Asynchronous Communication Device, Adapter, or Port 1300 - 1399 Game Port 1400 - 1499 Colour/Graphics Printer 1500 - 1599 Synchronous Communication Device, Adapter, or Port 1700 - 1799 Hard Drive and/or Adapter 1800 - 1899 Expansion Unit (XT) 2000 - 2199 Bisynchronous Communication Adapter 2400 - 2599 EGA system-board Video (MCA) 3000 - 3199 LAN Adapter 4800 - 4999 Internal Modem 7000 - 7099 Phoenix BIOS Chips 7300 - 7399 3.5" Disk Drive 8900 - 8999 MIDI Adapter 11200 - 11299 SCSI Adapter 21000 - 21099 SCSI Fixed Disk and Controller 21500 - 21599 SCSI CD-ROM System
AMI BIOS Beep Codes Code Description
1 Short Beep System OK 2 Short Beeps Parity error in the first 64 KB of memory 3 Short Beeps Memory failure in the first 64 KB 4 Short Beeps Memory failure in the first 64 KB Operational of memory or Timer 1 on the motherboard is not functioning 5 Short Beeps The CPU on the motherboard generated an error 6 Short Beeps The keyboard controller may be bad. The BIOS cannot switch to protected mode 7 Short Beeps The CPU generated an exception interrupt 8 Short Beeps The system video adapter is either missing, or its memory is faulty 9 Short Beeps The ROM checksum value does not match the value encoded in the BIOS 10 Short Beeps The shutdown register for CMOS RAM failed 11 Short Beeps The external cache is faulty 1 Long, 3 Short Beeps Memory Problems 1 Long, 8 Short Beeps Video Card Problems
Phoenix BIOS Beep Codes Note - Phoenix BIOS emits three sets of beeps, separated by a brief pause.
Code Description 1-1-3 CMOS read/write failure 1-1-4 ROM BIOS checksum error 1-2-1 Programmable interval timer failure 1-2-2 DMA initialisation failure 1-2-3 DMA page register read/write failure 1-3-1 RAM refresh verification failure 1-3-3 First 64k RAM chip or data line failure 1-3-4 First 64k RAM odd/even logic failure 1-4-1 Address line failure first 64k RAM 1-4-2 Parity failure first 64k RAM 2-_-_ Faulty Memory 3-1-_ Faulty Motherboard 3-2-4 Keyboard controller Test failure 3-3-4 Screen initialisation failure 3-4-1 Screen retrace test failure 3-4-2 Search for video ROM in progress 4-2-1 Timer tick interrupt in progress or failure 4-2-2 Shutdown test in progress or failure 4-2-3 Gate A20 failure 4-2-4 Unexpected interrupt in protected mode 4-3-1 RAM test in progress or failure>ffffh 4-3-2 Faulty Motherboard 4-3-3 Interval timer channel 2 test or failure 4-3-4 Time of Day clock test failure 4-4-1 Serial port test or failure 4-4-2 Parallel port test or failure 4-4-3 Math coprocessor test or failure Low 1-1-2 System Board select failure Low 1-1-3 Extended CMOS RAM failure
Hi daisy jean, The beeping sounds you hear are error code beeps which are associated with problem devices installed in your computer. The most common problem component is the RAM memory which slots into the motherboard inside your computer. It is often caused by static on the RAM chips and simply removing the RAM and spraying it with an anti-static electronic aerosol spray will often solve the problem. The second most common cause for beeps when turning on your PC is due to a faulty display card. If your PC has an on-board display card(this is the card where you plug your screen in), you will have to buy an add-on PCI-E display card to replace the faulty on-board display card. Let me know if you need any clarification. Best wishes, Graemevm
When you press the Power button to start the boot process, the LED lights glow while the computer verifies that there is sufficient electrical power to activate the hardware.
& Solution: When you press the power button, the LED lights on the
computer do not glow or the LEDs blink briefly and then stop. There is
no sound of the fan or hard drive spinning, and the screen remains
blank. The computer will not start if there is insufficient battery or AC adapter power.
The BIOS queries various hardware components used for the startup boot process.
& Solution: When you press the power button, the LEDs glow but
there is no fan or hard drive sound. The LEDs may glow briefly and then
The LED lights blink, stop, and then blink a
second or third time, but there is no sound from the computer and the
screen remains blank. The sequence of the blinking lights indicates a
specific error code.
A series of beeping tones is heard. The sequence of beeping tones indicate a specific error code.
a hardware component has recently been replaced, or if the PC has been
jarred or shaken, there may be a loose connection to the memory chips
or hard drive which prevents the computer from starting.
The BIOS loads the basic input (keyboard) and output (advanced LEDs / display screen / boot drives) devices into memory.
& Solution: When you press the power button, the LEDs glow, the fan
or hard drive sounds, are heard, but then the boot process stops and a
black screen - with an error message - displays.
The boot check has detected a communication error or conflict with a hardware component that must be corrected.
The BIOS loads the Windows operating system and starts the services
that allow low-level control of all of the background operations.
& Solution: When you press the power button, the LEDs glow, the fan
or hard drive sounds, are heard, the HP or Compaq Logo displays on a
black screen, but then the boot process stops and a blue screen - with
an error message - displays.
The boot check has detected a hardware driver error or a software conflict that must be corrected.
Control is transferred to the Windows loader to initiate the display of the advanced settings in the Windows environment.
The Windows logo displays during this step.
& Solution: When you press the power button, the computer performs
all the steps in the boot process, but after the Windows Logo displays,
the moving Windows progress bar or the rotating cursor stops moving and
the boot process stops.
An error message may display on a screen with the Windows logo. In some instances, there is no specific error message.
A black screen appears and the computer attempts to restart.
The Windows self-check has detected a software conflict that must be corrected.
3 beeps is usually a memory error. In fact, it means there is a failure within the first 64KB of system memory.You can usually find out if one of your ram sticks is bad by taking a stick out and turning the PC back on. If it boots, you found the bad ram. If not, replace and try again.
Once you can ever get it to boot, you can go to memtest (http://www.memtest.org/) and download the auto installer for USB key and boot from USB (usually by pressing f12 or del, depending on your bios...it will say on boot up). This will tell you if you have any further ram issues.
If this doesn't resolve your issue, the other option 3 beeps can mean is a bad motherboard or other system device (worse case scenario, and fairly rare).
Hope this helps...
it depends on the bios chip maker Here's some other beep codes:
for Award and Phoenix BIOS:
1 short beep: Normal 2 short beeps: CMOS error 1 long and 1 short beep: DRAM error 1 long and 2 short beeps: Video card error 1 long and 3 short beeps: Keyboard error 1 long and 9 short beeps: ROM error Long continuous beeps: DRAM not installed correctly Short continuous beeps: Bad power supply
1 short beep: DRAM flash error 2 short beeps: DRAM ECC check error 3 short beeps: DRAM detect error 5 short beeps: CPU error 6 short beeps: Keyboard error 8 short beeps: Video card error 9 short beeps: ROM error 1 long and 3 short beeps: Bad DRAM 1 long and 8 short beeps: Video card error
Invoking Beep Codes
If the computer is actually functioning and the computer beeps continuously, then there is a problem with a voltage on the power supply being incorrect or the CPU overheating. IMMEDIATELY go into the BIOS and check CPU temperature, fan speed and voltages
Annoying isn't it? You have built your computer you switch it on and then nothing happens except a few beeps from the PC speaker. Frustration sets in as you try to figure out what is wrong with it. If you didn't already know the computer has already told you the problem. It can't speak of course but it can direct you to the problem. Its all in the beeps. The BIOS can recognise when the problem occurs and sends a signal out to send a certain amount of beeps through the speaker. These beeps then tell you the location of the problem.
Unfortunately not all the BIOS' use the same codes as each other. Two of the main BIOS manufactures AMI and Award (now Phoenix) have different codes for there errors.
# of Beeps Error Description 1 Refresh Failure The memory refresh Circuitry is faulty 2 Parity Error Parity error in the Base (1st 64K) of memory 3 64K Base Memory Error Memory error in the base memory (1st 64K) 4 Timer Not Operational Timer 1 is not functioning (also caused by error in base memory) 5 Processor Error CPU error 6 8042 Gate A20 Failure Unable to switch to protected mode 7 Processor Exception Interrupt error The CPU on the CPU card generated an interrupt error 8 Display Memory Read/Write Error Video adapter is missing, incorrectly seated or has faulty memory 9 ROM checksum error The ROM checksum does not match that of the BIOS 10 Coms Shutdown Register Read/Write The shutdown register for coms RAM has failed 11 Cache Memory Bad The cache memory test has failed. Cache memory will be disabled. *** DO NOT enable it ***
With the first 3 beep codes, its well worth re-seating the memory just to make sure that it's in correctly. 8 Beeps is probably the most common in my experience. Can be caused by a badly seated Graphics card. If you have re-seated it then check with another Graphics card in the board.
Always check for loose components before sending the board back as this is the main cause of errors on the POST.
Award states that they now only use one beep from there BIOS. This beep is one long beep and then two short beeps. This indicates a graphics card problem. Any other beeps should be treated as a RAM problem first and then the board sent in to be inspected.
The reason that the Award BIOS only uses the beep code for display problems is that it tries to display the error on-screen if at all possible. If the BIOS cannot initiate the display adapter then this causes the BIOS to make the beep code for a display error, which must be corrected before any other errors can be determined. Memory Test fails and hard disk failures etc will all be displayed on screen
The IBM BIOS works with Short and Long beeps as well as the Award BIOS. However the IBM one does still have codes to work from.
Beep Code Error 1 Short Beep Normal POST, System booted OK 2 Short Beeps POST Error - Code on Display No Beep Power supply or Motherboard error Continuous Beep Power supply or Motherboard error Repeating short beeps Power supply or Motherboard error 1 short, 1 long beep System board error 1 long, 2 short beeps Display adapter error (MDA/CGA) 1 long, 3 short beeps Display adapter error (EGA/VGA) 3 long beeps 3270 keyboard card Phoenix BIOS The Phoenix BIOS works on a slightly more complicated manor than the others. It does display an error code for you and produce a series of beeps. This BIOS produces its beeps according to the hexadecimal code the error produces. The Phoenix BIOS has many different codes for its possible errors and so many different beep codes. Rather than list the entire section here, I have provided a link to the official PDF file containing the codes and how they are derived.
Phoenix BIOS Post Codes
System board errors should be looked at by a specialist, Again always try to re-seat components to ensure they are in correctly. If necessary take all components out except for the RAM CPU and graphics card, then try the system. Re-seating components is the number one fix for getting past the POST screen. One badly seated components can cause the entire system not to function. so pick out your bios and follow the steps above to diagnose .hope this helps