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My PC computer does not boot, beep or display on the monitor. Extensive troubleshooting has either the motherboard, CPU or both bad. Without a schematic or diagram, how can I determine which one is bad? Trust me, I have ruled out all other possible suspects. Any help would be appreciated. --Richard

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  • RLJ5831 Jul 27, 2008

    Monitor is ok.

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Is there power on the on the power button of both cpu and monitor?
was there any upgrade for hardware or software recently?

Posted on Dec 16, 2009

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What about the monitor? is it properly connected? Is it installed. Monitors come with their own software.

Posted on Jul 26, 2008

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I am running Unix Tru64 5.0 on Compaq Alphastation XP1000. The computer does not boot and does not display anything and does not beep. The power supply works and some LEDs are on on the logic board and the...


Hi.first pull-out your motherboard in the CPU case then power on without memory only processor installed.if you hear continuous beeping your motherboard is working good.
try this beep code means.

No beep means short,no power,bad CPU,loose peripherals.
One beep means everything is normal running motherboard.
Two beep means CMOS error IC.
One long beep,one short beep means motherboard problem.
One long beep,two short beeps means video card problem.
Three long beeps means keyboard error.
Repeated long beeps means memory error.
Continuous hi-lo beeps means CPU overheating.

Hope can help you.

Jun 18, 2011 | Compaq AlphaStation XP1000 PC Desktop

2 Answers

Boot failure, beeps and no display


Hi.
Do this solution first in the motherboard only processor installed need no memory.then power on your PC.if your motherboard no continues beeping.that need replacement of parts specially capacitor
leakage,became big or burn parts.
See beeping code.

Beep Code:
Description of Problem:
No Beeps
Short, No power, Bad CPU/MB, Loose Peripherals
One Beep
Everything is normal and Computer POSTed fine
Two Beeps
POST/CMOS Error
One Long Beep, One Short Beep
Motherboard Problem
One Long Beep, Two Short Beeps
Video Problem
One Long Beep, Three Short Beeps
Video Problem
Three Long Beeps
Keyboard Error
Repeated Long Beeps
Memory Error
Continuous Hi-Lo Beeps
CPU Overheating

Jun 17, 2011 | Dell Motherboard For Precision 470...

1 Answer

I just turned on my computer and find that the cpu is working but there is no display at the monitor,another thing is when the cpu is booting i heard three short beeps.


The RAM may be bad or not seating properly.

Open the CUP Box and reseat the RAM. If the Beep is still coming up replace the RAM.

Jan 20, 2011 | Intel Motherboard

1 Answer

When booting the screen says no signal and the it begins beeping intermedately


I think the graphics card has become unseated as the PC does not need a monitor to start up so there would be no beeps; Here is a list of beep codes with there meanings.
BEEP CODE MEANING POSSIBLE CAUSE
1 Beep (No video) Memory refresh failure Bad memory
2 Beeps Memory parity error Bad memory
3 Beeps Base 64K mem failure Bad memory
4 Beeps Timer not operational Bad motherboard
5 Beeps Processor error Bad processor
6 Beeps 8042 Gate A20 failure Bad CPU or Motherboard
7 Beeps Processor exception Bad processor
8 Beeps Video memory error Bad video card or memory
9 Beeps ROM checksum error Bad BIOS
10 Beeps CMOS checksum error Bad motherboard
11 Beeps Cache memory bad Bad CPU or motherboard

Apr 19, 2010 | Gateway Profile 5.5 PC Desktop

2 Answers

Using an Asus P5B -E Plus motherboard for 2 years now with no problems. But when I boot up my computer now i get 1 long beep followed by 3 short beeps and no display on my monitor. I have to reset the CPU...


this beep code is described from ASUS as a video card issue. Perhaps your chipset is failing. if you are using a 3rd party video card. try removing it or re attaching it. If you are not using a 3rd party. i suggest you do. and disable the onboard in the bios.

Jul 27, 2009 | ASUS P5B-E Motherboard

1 Answer

ASUS K8S-MX PC powers up but no display on monitor and no error codes. Hard drives spin and sounds as if it is in boot routine


OPEN UR CPU AND OUT UR RAM FROM MOTHERBOARD AND START UR PC WITHOUT RAM IS IT BEEP OR NOT IF IT BEEP THEN CLEAN UR RAM AND RE INSERT IN MOTHER BOARD AND THEN START UR PC IS IT OK
IF NOT THEN PICOUT BATERY CELL 2032 FROM MOTHER BOARD AND THEN START UR PC

IS IT BEEP WITHOUT RAM AND CELL IF YES THEN CLEAN UR RAM AND RE INSERT IN MOTHER BOARD AND THEN START UR PC
IF IT IS OK THEN CHANGE UR BATTERY WITH NEW ONE

IF UR PC BEEP WITHOUT RAM BUT NO DISPLAY WITH RAM THEN CHANGE UR RAM WITH NEW ONE.

Jul 01, 2009 | ASUS K8S-MX Motherboard

2 Answers

One long beep tone---NO Display on monitor(monitor checked ok)


Definitely not your monitor. It is either a CPU or a Memory problem, is this a new build or did an existing computer suddenly start doing this?

Is that your motherboard, the Gigabyte 7VM400M ?

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2 Answers

No beep,No Display on my monitor,only CPU heatsink fan is moving


have you thought about changing the battery on the motherboard, also checking that the fan on the cpu is seated properly with enough heatsink paste as both these issues will stop the pc from booting

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1 Answer

ASUS P4SP-MX motherboard no POST and no beep without ram


Try removing everything attached to it. The only thing should be the cpu and cpu fan. Turn it on. If it is the same, then it is your motherboard. If you do get the beeping, then start installing things one by one starting with the memory.

Jul 03, 2008 | ASUS P4SP-MX Motherboard

3 Answers

Continuous Beeping, new PC


Hi.
Continues short beeps... means a short OR no power OR loose card OR system board.
Test it without the keyboard and mouse too. Just the Processor with heatsink, motherboard, memory and Video card.
Now add the keyboard, no mouse yet.
Check also the voltage of the CMOS Battery it should be 3V.

keep me posted for the result... count also the beeps.

Feb 09, 2008 | Intel Motherboard

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