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Compaq computer doesn't boot, no BIOS post screen/no video or beeps

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  • ositaechebir Aug 04, 2008

    Yes I did, yesterday. Only thing that comes on is the CPU fan and the case fan.

  • ositaechebir Aug 04, 2008

    Yes the systems Power and HD led illuminates, but I get no video, I tryed 2 seperate working monitors. None of the USBs work, yet they will power a ipod. Ive purchased a new PS yesterday but get the same issues. The CD and DVD roms seems like they want to boot but nothing happens, they spin for sometime then go quiet.

  • Mark Kessler May 11, 2010

    have you tried replacing the power supply?

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  • 327 Answers

Welcome to fixya

does the computer turn on?

do any or the lights come on or is it just dead?

if compute does not turn on then you might want to make sure ever thing is plug in ...

if ever thing is pluged in and and still does not turn on this might be the power supply has gone bad ...

if computer turn on and nothing happens this could be a bad hard drive or the OS has messed up first try to but in your reboot disk this still nothing happens then the hard drive could be broken

hope this helps you out have a good day

Posted on Aug 04, 2008

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1 Answer

Black screen green dots


What was the last thing you did on your computer before this happened?
Did you change any system settings in the BIOS?
Did you add new software? or update any software or drivers?
Did you add any new hardware?
Is your system BIOS infected with a virus?
Because it appears that your PC is hanging up during the Power-On-Self-Test [POST]

Here's what happens; when the power is turned on, the computer BIOS [Basic Input/Output System] runs a POST (Power-On Self-Test). It is a diagnostic testing sequence that the computer runs to determine if the hardware [like the mouse, keyboard, hard drive, etc.] is working properly.

If the necessary hardware is detected and found to be operating properly, the computer begins to boot; If the hardware is not detected or is not operating properly, the BIOS issues an error message.

The error message may be a text on the display screen and/or a series of coded beeps, depending on the nature of the problem.

The series or pattern of beeps may vary...they may be in a number of long or short beeps or a mixture of long and short beeps, or even one long continuous beep, depending on what type of BIOS is installed.

Since POST runs before the computer's video card is activated or the integrated graphic chip on the main board, it may not be possible to progress to the display screen.

So if an error is detected during the POST it will halt the boot process because the hardware is essential for the computer's functions.

How many beeps do you hear during the initial POST?

You may have a burned out video chip/card; or corrupt drivers; or even an IRQ [Interrupt Request] conflict.

Nov 26, 2013 | Acer PC Desktops

1 Answer

Short beep long beep


1 long, 1 short beepSystem board problem When your computer boots up, the Basic Input-Output System (BIOS) performs an all-systems Power On Self-Test (POST).
The POST tests your computer's most important components, including the motherboard itself, the system's memory and the video card.
If the computer deviates from its standard beep, it may indicate a very serious problem with your computer, or it may simply indicate that you need to replace a system fan or a memory stick. BIOS beep codes vary according to manufacturer.

Start your computer.
Pay attention to the number of beeps and the length of the beeps.
There are short and long beeps.
Write down your observations.
Write down the BIOS type if this information is on your screen.
Consult your computer documentation if you don't know what type of motherboard you have.
Visit your computer manufacturer's support website for your computer model if you purchased a pre-built machine.


Look up your BIOS manufacturer (AMI, Award and Phoenix, for example) at a BIOS beep code website such as 5StarSupport, PC Hell or PC Guide (see Below).
Match the your computer's beep code with the beep code listing for your BIOS manufacturer.
http://www.pcguide.com/ts/x/sys/beep/index.htm
http://www.5starsupport.com/info/beep_codes.htm
http://www.pchell.com/hardware/beepcodes.shtml

Aug 25, 2013 | HP Pavilion p6716f-b Desktop PC & 20 Inch...

1 Answer

No boot - short beep, long beep (it is not a memory problem)


When your computer boots up, the Basic Input-Output System (BIOS) performs an all-systems Power On Self-Test (POST).
The POST tests your computer's most important components, including the motherboard itself, the system's memory and the video card.
If the computer deviates from its standard beep, it may indicate a very serious problem with your computer, or it may simply indicate that you need to replace a system fan or a memory stick. BIOS beep codes vary according to manufacturer.

Start your computer.
Pay attention to the number of beeps and the length of the beeps.
There are short and long beeps.
Write down your observations.
Write down the BIOS type if this information is on your screen.
Consult your computer documentation if you don't know what type of motherboard you have.
Visit your computer manufacturer's support website for your computer model if you purchased a pre-built machine.


Look up your BIOS manufacturer (AMI, Award and Phoenix, for example) at a BIOS beep code website such as 5StarSupport, PC Hell or PC Guide (see Below).
Match the your computer's beep code with the beep code listing for your BIOS manufacturer.
http://www.pcguide.com/ts/x/sys/beep/index.htm
http://www.5starsupport.com/info/beep_codes.htm
http://www.pchell.com/hardware/beepcodes.shtml

Aug 25, 2013 | HP Pavilion p6716f-b Desktop PC & 20 Inch...

1 Answer

Operating systems doesn't boot (BIOS beep codes)?


Do you have video going to your monitor? If not the beeps mean you have a bad memory stick in there. If you have video the beeps are the bios telling you that its not set right. More than likely you have it set to run too fast. Go into your bios find where the processor speed is located and choose a lower freq. rate. Its probably set too high for the memory you have.

Jun 22, 2012 | AcerPower F2 PC Desktop

1 Answer

I have a Compaq Presario SR2020NX. I press the power button and the fan comes on, the green light is bright , the cd drive blinks then stops as if the computer is starting but nothing happens. The fan...


Disconnect the drive and try to boot to the BIOS (usually with F1, F2 or Delete key). If that doesn't work, try removing all cards from the computer (except a video card if the video port is not on the motherboard). If you can boot this way, try inserting back any removed cards to see what hangs it. Do you hear any beeps when the computer is booting (beep codes)?

Sep 24, 2011 | HP Compaq Presario SR2020NX PC Desktop

1 Answer

My dell optiplex doesn't boot... but i can hear the sound (not beeping) and the spinning hard disk. Nothing is in the screen. I tried removing and exchanging RAM but didn't work.


Hello,

The possible causes that can cause a PC not to boot are:

  1. Defective RAM
  2. Defective Video Card
  3. Defective HDD
  4. BIOS battery
For the RAM and for the video card, check if they are well clipped on the motherboard. Try removing and replacing them.

As for the HDD, check the SATA/IDE cables.

If all the steps above seems to be ok, try changing the BIOS battery found on your motherboard.(Note this will reset your BIOS settings).

Hope this helps you !!

May 10, 2011 | Dell OptiPlex 360 Desktop Computer

1 Answer

My compaq evo beeps 1 short 2 long but nothing on screen


This POST (power on self test) error code could be this depending upon the BIOS manufacturer.
one long, two short beeps

  • System board failure
  • Video adapter problem
  • LCD assembly failure

Feb 27, 2010 | Compaq PC Desktops

2 Answers

Won't pass startup bios / screen


Make a note of the number of beeps and whether they are long or short. Put the old video card back in the machine. Go online and do a search for "bios beep codes", check what you wrote down and see what the problem was. It was probably a video error. Perhaps you should install the video drivers for your new card before you install it, that way it might avoid the error on startup.

Jan 05, 2009 | Compaq Presario sr1403wm AMD Sempron 3000+...

1 Answer

PC boots up, but no display and hard drive does not seem to spin


Actually you do want to hear one beep.
This is POST. Power On Self Test.
No display is a video problem. Swap the card for a known good video card. You should be able to get into the BIOS with that. Presario’s are quit.
While in the BIOS see if the HDD is shown. It doesn’t hurt to check the connection inside. Please keep yourself grounded when inside the PC. For the Compaq Presario S4020WM site go here:
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?lc=en&cc=us&dlc=en&product=326832&lang=en&

Dec 04, 2007 | Compaq Presario s4020wm (DK214AR#ABA) PC...

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