System boot up w/ 4 beeps but no VDO

I got a HP comp about two years old, it's been working ok but one day I turn it on there is no video. The system boot up w/ 4 beeps.
It's not the monitor because I test it w/ another known good working monitor. I found the video is on board. I installed a PCI Video card hoping that it will overide the onboard video. But it does not work. Still no video.
Please help. Appreciate.

AMI BIOS


One short beep: DRAM refresh failure

As the system attempts to refresh the memory, there is a problem. Hopefully, it is just a poorly inserted module, but could also be a defective module or motherboard memory bank.


Two short beeps: Parity circuit failure

This is a system memory problem caused while checking the parity bit on the system memory. Hopefully, it is just a poorly inserted module, but it could also be a defective module or motherboard memory bank.


Three short beeps: Base 64K RAM failure

The first bank of memory (within the first 64K to be exact) has a problem. Hopefully, it is just a poorly inserted module, but it could also be a defective module or motherboard memory bank.


Four short beeps: System timer failure

One of the timers used for controlling motherboard system functions has an error. There's either a failure of the motherboard or one of the devices on the motherboard.


Five short beeps: Processor failure

Some sort of problem related to the processor. This doesn't necessarily mean the processor is dead though because the processor runs the BIOS code. Common causes may be poor jumper settings on the motherboard or overheating problems (from overclocking?).

Six short beeps: Keyboard controller failure

Either the chip that communicates with the motherboard is bad, or the right keyboard is not properly connected.


Seven short beeps: Virtual mode exception error

This is likely a problem with the processor; it doesn't necessarily mean the processor is dead though because the processor runs the BIOS code.


Eight short beeps: Display memory failure

The frame buffer memory on the video card cannot be written to. The computer will likely continue to boot on this error, but there's a problem with the video card.


Nine short beeps: ROM BIOS checksum failure

There is probably a defective BIOS ROM chip on the motherboard.


Ten short beeps: CMOS error

There is a problem with the motherboard as it attempts to communicate with the CMOS (the memory that holds your BIOS settings).


Eleven short beeps: Cache memory error

There is likely a problem with your system's L2 cache or motherboard. Check to make sure the cache is inserted correctly and the motherboard jumpers are set properly before deciding the cache module itself is bad.


Continuous beeping: Memory or video problem

Memory problems are the likely culprits when a BIOS begins to beep uncontrollably.

Phoenix ISA/MCA/EISA BIOS Beep Codes:

Beeps
Error Message
Description

1-1-2 CPU test failure The CPU is faulty. Replace the CPU
Low 1-1-2 System board select failure The motherboard is having an undetermined fault. Replace the motherboard
1-1-3 CMOS read/write error The real time clock/CMOS is faulty. Replace the CMOS if possible
Low 1-1-3 Extended CMOS RAM failure The extended portion of the CMOS RAM has failed. Replace the CMOS if possible
1-1-4 BIOS ROM checksum error The BIOS ROM has failed. Replace the BIOS or upgrade if possible
1-2-1 PIT failure The programmable interrupt timer has failed. replace if possible
1-2-2 DMA failure The DMA controller has failed. Replace the IC if possible
1-2-3 DMA read/write failure The DMA controller has failed. Replace the IC if possible
1-3-1 RAM refresh failure The RAM refresh controller has failed
1-3-2 64KB RAM failure The test of the first 64KB RAM has failed to start
1-3-3 First 64KB RAM failure The first RAM IC has failed. Replace the IC if possible
1-3-4 First 64KB logic failure The first RAM control logic has failed
1-4-1 Address line failure The address line to the first 64KB RAM has failed
1-4-2 Parity RAM failure The first RAM IC has failed. Replace if possible
1-4-3 EISA failsafe timer test Replace the motherboard
1-4-4 EISA NMI port 462 test Replace the motherboard
2-1-1 64KB RAM failure Bit 0; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-2 64KB RAM failure Bit 1; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-3 64KB RAM failure Bit 2; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-4 64KB RAM failure Bit 3; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-1 64KB RAM failure Bit 4; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-2 64KB RAM failure Bit 5; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-3 64KB RAM failure Bit 6; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-4 64KB RAM failure Bit 7; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-1 64KB RAM failure Bit 8; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-2 64KB RAM failure Bit 9; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-3 64KB RAM failure Bit 10; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-4 64KB RAM failure Bit 11; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-1 64KB RAM failure Bit 12; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-2 64KB RAM failure Bit 13; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-3 64KB RAM failure Bit 14; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-4 64KB RAM failure Bit 15; This data bit on the first RAM IC has failed. Replace the IC if possible
3-1-1 Slave DMA register failure The DMA controller has failed. replace the controller if possible
3-1-2 Master DMA register failure The DMA controller had failed. Replace the controller if possible
3-1-3 Master interrupt mask register failure The interrupt controller IC has failed
3-1-4 Slave interrupt mask register failure The interrupt controller IC has failed
3-2-2 Interrupt vector error The BIOS was unable to load the interrupt vectors into memory. Replace the motherboard
3-2-3 Reserved
3-2-4 Keyboard controller failure The keyboard controller has failed. Replace the IC if possible
3-3-1 CMOS RAM power bad Replace the CMOS battery or CMOS RAM if possible
3-3-2 CMOS configuration error The CMOS configuration has failed. Restore the configuration or replace the battery if possible
3-3-3 Reserved
3-3-4 Video memory failure There is a problem with the video memory. Replace the video adapter if possible
3-4-1 Video initialization failure There is a problem with the video adapter. Reseat the adapter or replace the adapter if possible
4-2-1 Timer failure The system's timer IC has failed. Replace the IC if possible
4-2-2 Shutdown failure The CMOS has failed. Replace the CMOS IC if possible
4-2-3 Gate A20 failure The keyboard controller has failed. replace the IC if possible
4-2-4 Unexpected interrupt in protected mode This is a CPU problem. Replace the CPU and retest
4-3-1 RAM test failure System RAM addressing circuitry is faulty. Replace the motherboard
4-3-3 Interval timer channel 2 failure The system timer IC has failed. Replace the IC if possible
4-3-4 Time of day clock failure The real time clock/CMOS has failed. Replace the CMOS if possible
4-4-1 Serial port failure A error has occurred in the serial port circuitry
4-4-2 Parallel port failure A error has occurred in the parallel port circuitry
4-4-3 Math coprocessor failure The math coprocessor has failed. If possible, replace the MPU




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Tous en temps voulu.

award bios: four beeps (1 long, three short) = video card failure. i believe this and the three beep code (1 long, two short) are distictly different - four meaning the card has failed, three meaning that a card isn't detected. i've been wrong before, though.

according to HP's website (for the pavilion 7000 series, at least), four beeps means "timer not operational" ... either a failure within the first 64k of memory, or timer 1 on the "baseboard" (i take that to mean motherboard) is not functioning.

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personally, i think christ is a can of spam; spam is infinate and has no age. coagulation is modern day nectar and the key to immortality. but then, i also think that pre-columbians had it right: the world is flat - its a huge petri dish.

[This message has been edited by magtecln (edited 12-09-2001).]