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How to properly install my compaq series PDP123P power supply

I turn on my desktop and my screen doesn't load. It beeps once and them turns off

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

antking
  • 51 Answers

SOURCE: can't reboot Compaq/Presario desktop, (power supply is working)

first can you try to disconnect power and IDE cable cd-rom,cd-rw,dvd-rw and floopy disk then see can boot up no stop in the screen says loading boot menu... and stop right there.make sure HDD is conected

second try disconect you HDD only other can connected to see can boot up no stop in the screen says loading boot menu... and stop right there

if solution one is ok means you dvd go problem.if second solution ok meand you HDD faulty.can you try put you RAM in diferrent slot

Posted on Dec 27, 2008

  • 523 Answers

SOURCE: my dell dimension 2400 beeps morse code like and won't load

you have to follow the beeps very well to understand wat is the problem, each type of beep gives you sign for problem. so check if its one beep, two, or three, short or long, this makes very easy to you to define the problem.
Try to take out that parallel port if your pc works fine, this means this connector was not compitable to your board.

Best regards

Posted on Mar 01, 2009

joecoolvette
  • 5660 Answers

SOURCE: Compaq Presario SR1620NX Desktop won't turn on

I may state too detailed, and over simplify in my solution.
This is not to insult your intelligence, but an endeavor to explain thoroughly.

To bypass the Power On switch, one uses a jumper wire to jump the Soft Power On wire, to ANY Ground wire.

The Soft Power On wire has Green insulation, and is located in the 24-pin ATX main power cable.
ANY wire that has Black insulation is a Ground wire.

To explain:

This is HP Support, and the Motherboard Specifications page, for the Compaq Presario SR1610NX desktop computer,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00378480&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=1127350

I would like you to scroll down the page, until you come to the motherboard illustration.
(Under the - Motherboard layout and photos - heading)

This illustration represents the motherboard from a top view, and with no hardware components installed.
(No Processor, Ram Memory modules, power cables from Power Supply plugged in, and so on)

At the top right of the motherboard is a small rectangle, with an inscription in it.
(The tiny printing reads - SMSC with LPC47M997NR under it)

Immediately below this small rectangle, is the 24-pin ATX main power cable connector.
Two vertical rows of 12 socket holes.
(Next to it is printed - ATX 1)

Now here is a much better view of a 24-pin ATX main power cable, and the corresponding connector on the motherboard,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

The photo to the far left, shows a better view of the 24-pin ATX main power cable connector, on the motherboard.
(Yours may be an opaque whitish plastic. It also will not be located on the outside edge of the motherboard)

The photo in the middle, shows the 24-pin ATX main power cable not plugged in.

The photo all the way to the right, shows the 24-pin ATX main power cable plugged in, and shows the Green Soft Power On wire.
Also shows the Black ground wires.

The 24-pin ATX main power cable is left plugged into the motherboard.

Looking at the middle photo once more, note how the power wires come into the connector.
This is the Back of the connector.

Each wire ends in a metal terminal.
The metal terminal is approximately 1/2 inch in length.
This means the power wire goes down in the connector pretty deep, before it ends in the metal terminal at the Front of the connector.

I use a wire that is approximately the same size, (Gauge), as the power wires, for the jumper wire.
Strip around 1/2 inch of insulation, from each end of the jumper wire, then twist the wire ends.

The jumper wire should be around 3 inches in length, and bent into a U-shape.

Power supply unplugged from power, insert one end of the jumper wire into the socket hole that contains the Green wire.
(Soft Power On wire)

The jumper wire end is stuffed down into the socket hole with the Green wire, right next to the Green wire. You are pushing the bare stripped end past the insulation of the Green wire, with the intent of touching the metal terminal end.

Insure that the stripped bare wire, is touching the metal terminal end, as best as you can.
The stripped end may have to be longer than 1/2 inch.

(An alternate form of jumper wire is a paper clip straightened out, then bent into a U-shape, with wraps of tape in the middle for insulation. I have used this method also. I just don't recommend it for solutions)

Power supply plugged back into power:

With the one end stuffed down into the socket hole for the Green wire, hold the jumper wire by the insulation, and touch the other end down into ANY socket hole that has a Black wire. (Ground)

Warning!
There may be a spark. You may wish to wear a glove on the hand for the jumper wire.
The voltage is 5 Volts (DC)

Two common flashlight batteries are 3 Volts. (DC. Each battery produces 1.5 Volts)

To me it isn't a big deal if there is a little spark. Wanted to advise you beforehand, so that you would be aware, though.

The Power On button that you push is made of plastic. Located inside it is the Power On switch.
With finesse the Power On switch can be removed, and a new one inserted.

(I use a hair dyer on low heat setting, and move the hair dryer back, and forth to gently soften the plastic, so that tabs can be eased to one side, and the Power on switch removed.

The Power On button/switch assembly can also be lowered, {Removed from computer}, into a bowl of very, very warm water, to soften the plastic Power On button. The switch will be removed, and thrown away. The plastic Power On button is then dried, and readied for the new Power on switch)

(Barring the worst case scenario, if a correct Power On switch cannot be obtained, a Power On switch can be used by itself, and would just hang outside of the computer. Not very aesthetically appealing, or professional, but the computer will work again)

I have found that this generic Power On switch, seems to be a correct substitute for most computers,

http://www.directron.com/atxswitch.html

Ebay may have one in Computers and Networking>Computer Components.

Older computers, used a different method to turn the Power Supply on.
(PSU - Power Supply Unit)

The Power On button pushed against a long metal rod, which in turn pushed against a Power On switch, located in the Power Supply.

The Power Supply in your computer always has a constant 5 Volt standby power, when the Power Supply is plugged into power.

When the Power On button is pushed, it pushes against the Power On switch.
Inside the switch is a convex shaped thin disk of metal.

The 'plunger' of the switch, pushes against the middle of the convex metal disk.

The outside edges of the disk are connected to Ground.
When the convex disk flattens, the middle touches a Positive connection.

This contact is Momentary.
The Power On switch is a Momentary Contact Switch.
When you let go of the Power On button, the disk resumes it's convex shape, and the brief connection is broken.

The Power On switch wires connect to pins on the motherboard.
The area the pins are in, is the Front Panel header.
(A connector on a motherboard is referred to as a Header. The plastic piece on the front of a computer is a Front Panel. Sometimes referred to as a Front Bezel)

To remove the Front Panel to your computer, far enough to easily access removing the Power On switch, the Power On switch wires will have to be disconnected from the Front Panel header, on the motherboard.

So will all the wires leading from the Front Panel, to the Front Panel header on the motherboard.

Looking back at the motherboard illustration, the Front Panel header is located on the very bottom right of the motherboard.

JFP1
(Junction Front Panel 1)

You will note that there are two rows of pins.
Four across the top row, five across the bottom row.

BEFORE (Not shouting) you attempt to remove the Front Panel, it would behoove you to make a drawing, and notes as to where those wires go.
If wires come loose, I don't have a way at present to tell you where they go.

It has been a while since I have worked on this series of Compaq Presario's. The wires from the Front Panel may just end in a single connector, that you simply line up with the corresponding pins on the motherboard, and plug the connector in. (On?)

The connector is oriented, by the pin in the Front Panel header that is missing.
Four pins across the top, with one missing.
Five pins across the bottom.
The connector will also have one hole blocked off, to match the pin layout of the Front Panel header.

The other wires from the Front Panel though, may not end in a single connector.
These headers are for the audio connections on the Front Panel, USB ports, and so on.

I'll await your diagnoses to see if a new Power On switch is required, or a new Power Supply.
If it is a new Power Supply that is required, I will give recommendations, and why, if you wish.

Should you have any questions, I will try to reply as speedily as possible.

Posted on May 26, 2010

Testimonial: "Thank you so much! What a great reply! I really appreciate the detail, references to online manuals as well as the suggestion for where to get parts. Wonderful help! THANK YOU!!!"

Sunnyrepairs
  • 808 Answers

SOURCE: problem with hp compaq presario sr5450f desktop pc

Sometimes it happens that you start the computer and get black screen having this message, "NTLDR is missing press Ctrl +ALT +DEL to restart". This mostly happens when the virus infects your computer, because most of the viruses attach themselves to the NTLDR files. This can also happen due to power failures, problem in master boot sector, corrupt bios settings, or some other problem in the boot.ini file. These files play a very important role in rebooting the system and if there comes any problem or they get corrupted by some virus or for some other reason, then they do not allow the hard drive to boot. However, its not that much difficult to fix this error, as all you need is to get your installation cd and then need to follow some simple steps. This will definitely help you in fixing your boot loader to the working state.
*First, you need to get your installation cd and then place it in your hard drive and restart your system.
*After restarting the system, you will get message "Press any key to enter setup". So, follow this message and press any key, this will take you to the setup. However, there could be some different scenario as well depending on your bios setting. This is because of the fact that if you have not given priority to your hard drive then it would not boot in this way. For this, you need to change your boot device priority and its better that you set this priority to your CD Drive.
*Once you enter the setup and it loads the entire program, then you need to press the R key, which is for repairing the windows installation. This action will take you to the dos mode where further processing will be done. In the dos mode, system will ask you about installation place. Most of the people install their operating system in the C drive, which comes at number 1 option, so you need to press option 1. However, if you have so many partitions or you have installed the operating system then you need to choose the option according to your drive name. Here you need to enter your password as well, but if you have not set any password then you can simply press enter.
*Then there will be a c:\WINDOWS> command in a dos mode where you need to write, "Copy d:\i386\ntldr c:\windows. However, if you have different place of your installed operating system then you will write the address of that drive. This is the whole process and now you can eject the cd and can press exit to restart the system. Now this process will copy the correct NTLDR file from installation disk to your hard drive by making your system in the working condition.
Remember to fix your Windows registry with RegInOut Registry Cleaner and PC Optimizer. The Intel software partner program, RegInOut thoroughly clean your registry and helps to avoid Windows errors and crashes. If you place the registry protection in place it will give a great boost to the Windows internal functions.
To start a seventeen seconds download of this amazing program just go to this location and directly download the program from Intel Software Partner Reginout

Posted on Sep 01, 2010

mailtoravi
  • 186 Answers

SOURCE: My computer is a dell

6 Beeps in your Studio XPS 8100 computer indicates Video Card failure.

The Motherboard is unable to detect the Video Card properly or not at all.

Try removing and re-seating the Video Card by following the instructions in the link which opens up the Service Manual of the computer:

http://support.dell.com/support/edocs/systems/studio8100/en/index.htm

If the computer still behaves the same way after removing and reseating the Video Card, you may have to get the Video Card replaced...check with Dell about the Warranty and if the computer is still covered under warranty, get the Video Card replaced.

However, if the computer is out of warranty, you can replace the Video Card in the computer with any one of these as per your choice:
ATI Radeon HD 5770

NVIDIA GeForce GTX 260

NVIDIA GeForce GTS 240

NVIDIA GeForce GT 220

Posted on Mar 23, 2011

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Compaq gc668aar will not startup_startup repair will not fix


http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&lc=en&dlc=en&product=3436819

It isn't a Processor problem

(Or is there a series of beeps, and the fan is running wide open?)


[ Just curious. Call it a poll, if you will.....
Did you follow Anti-Static Precautions, and did you Thoroughly clean the Processor, and bottom the Heatsink; plus correctly apply, fresh new Thermal Paste? Reply in a Comment ]

Where did you get the Start-Up repair from?

What does the router have to do with this?

Do you get any BIOS Beep Codes?

You have another 'Compaq processor'.
Do you have another KNOWN to be good, Compatible Power Supply also?

Post back in a Comment

Regards,
joecoolvette

(Computer turns on does not = Boot.
When the computer boots it means Windows is running.
Power Supply turns on is also mistaken for computer turns on.
No it didn't. The Power Supply turned on, is all,

http://en.wikipedia.org/wiki/Booting )

Dec 17, 2012 | Compaq Computers & Internet

3 Answers

Computer will not start


It all depends how many beeps there were.
From http://h18000.www1.hp.com/products/quickspecs/12253_div/12253_div.HTML
Diagnostic LED Explanation Table Number of 1-second red LED blinks followed by 2-second pause, then repeats:
2-processor thermal protection activated
3-processor not installed
4-power supply failure
5-memory error
6-video error
7-PCA failure (ROM detected failure prior to video)
8-invalid ROM, bootblock recover mode

I have only really come across 4 beeps = order new Power Supply or 5 Beeps = reseat the memory and hope it works

Regards,

Oli

Apr 15, 2010 | HP Compaq dc7600 Small Form Factor PC...

1 Answer

My d530 minitower powers off unexpectedly and red lights starts to blink on System's LED//


Hi Kindly let me know how many times the red light blinks
Condition Code Service Actions Processor thermal protection activated. Power LED blinks red twice, once a second, followed by a two second pause.
  1. Make sure the computer air vents are not blocked and that the cooling fan is running.
  2. Open the hood, press the power button, and see if the processor fan spins. If the fan is not spinning, make sure the fan cable is plugged into the cable header on the system board, and that the fan is properly installed and seated.
  3. If the fan is plugged in and seated properly, but is still not spinning, replace the processor fan.
  4. Reseat the processor heatsink and make sure the fan assembly is attached to the heatsink properly.
Processor is not installed. Power LED blinks red three times, once a second, followed by a two second pause.
NOTE: This condition indicates a missing or improperly installed processor, not a defective one.

Make sure there is a processor in the system. Reseat the processor and verify that it is installed properly. Power failure (power supply is overloaded) Power LED blinks red four times, once a second, followed by a two second pause.
  1. Check the voltage selector, located on the rear of the power supply, is set to the correct voltage (the correct setting depends on the region).
  2. Open the hood and make sure the 4-wire power supply cable is fully connected to the power connector on the system board.
  3. Check if a device is causing the problem by removing all attached devices (such as disk drives and expansion cards), then power on the system. If the system enters POST, power off and replace one device at a time, repeating the procedure until the system power failure reoccurs. Replace the device that caused the failure, then replace each of the other devices and confirm that they are functioning properly.
  4. If you cannot isolate the failure to a specific device in the previous step, replace the power supply. **
  5. Replace the system board.*
Pre-video memory error. Power LED blinks red five times, once a second, followed by a two second pause, and five simultaneous beeps are sounded
  1. Reseat the DIMMs in the memory slots on the system board, then power on the system.
  2. Replace the DIMMs one at a time to isolate the faulty module.
  3. Replace 3rd-party memory with HP memory.
  4. Replace the system board.*
Pre-video graphics error. Power LED blinks red six times, once every second, followed by a two second pause, and six simultaneous beeps are sounded. For systems with a graphic card:

  1. Reseat the graphics card and then power on the system.
  2. Replace the graphics card.
  3. Replace the system board.*


For systems with integrated (on-board) graphics, replace the system board. PCA (system board) failure. ROM detected failure prior to video. Power LED blinks red seven times, once a second, followed by a two second pause, and seven simultaneous beeps are sounded. Replace the system board. Invalid ROM based on bad checksum Power LED blinks red eight times, once a second, followed by a two second pause, and eight simultaneous beeps are sounded.
  1. Reflash the ROM using a ROMPaq diskette.
  2. Replace the system board.*
System does not power on. No beeps or blinks since the system is not functioning. Press and hold the power button for less than four seconds. Perform the following steps depending on whether the hard drive LED turns green.

If the hard drive LED turns green, then:

  1. Make sure the voltage selector (which is located on the back of the power supply) is set to the correct voltage for your region.
  2. Remove the expansion cards one at a time until the 3.3V auxiliary light on the system board turns on. If removing a card turns the light on, replace the card and then see if the system works.
  3. Replace the system board.*


If the hard drive LED does not turn green, then:

  1. Make sure the computer is plugged into a functioning AC power outlet.
  2. Open the hood and make sure the power button is securely fastened in the power harness and that the harness is connected properly to the power connector on the system board. In other words, make sure that the power button is making contact with the power circuit.
  3. Make sure the power supply cables are connected properly to the power connectors on the system board.
  4. Check to see if the 3.3V auxiliary light on the system board is not turned on, replace the power supply. **
  5. Replace the system board.*

Dec 29, 2009 | HP Compaq d530 Convertible Minitower PC...

3 Answers

Won't boot. Series of Beeps plus red light


If nothing was displayed on the monitor during the beeps then change the RAM stick(s)

Thanks

Oct 29, 2009 | HP RT935UAABA - HP Compaq dc7800...

2 Answers

Compaq presario 5000 desktop won't boot!


oh that means you have a power failure so you have to take it for a repair

Sep 24, 2009 | Compaq Presario 5000 PC Desktop

2 Answers

Desk top emachine powers on


You state that thre are no beeps coming from the PC upon boot. If you remove the memory entirely and reboot, you should get a series of BIOS post tones. If you do not get these, I would first test your power supply to make sure it is working properly. If it is, you most likely have a failed hardware component: either motherboard or processor. If you get no post tones without memory loaded and with a known good power supply, the motherboard will be your problem child.

If you DO get post tones with a known good power supply, try replacing memory 1 stick at a time (if you have more than 1). If 1 works, you have your culprit. If neither work, then you most likely have a bad processor.

Process of elimination...sucks sometimes :-(

Jun 18, 2009 | E-Machines eMachines Desktop PC

2 Answers

Black screen


Ensure that the power button is pressed and the monitor is plugged in correctly. If ok, then the installation was stopped while installing your video drivers. If possible use another monitor to re-load the xp operating system until completed. Once the video monitor drivers are loaded the monitor will work again. Let me know if you have any questions.

Don't forget to rate this solution before you log off.

Jan 26, 2009 | Compaq Presario S4020WM PC Desktop

1 Answer

Black screen at start up


Isolate the problem in the following order:

1. Make sure that your display monitor is working fine by checking it on another computer. Try to check the display cables from the PC to the monitor as well and make sure they are connected properly.

2. Check the RAM. If there is a problem with your system RAM, it will normally give certain indications like a series of beeps. Try to power on your PC without any RAM installed and you should hear a series of beeps. Count it and try to compare it by turning on the PC with the RAM installed. If it gives the same number of beeps with the RAM installed, then you most probably have a problem with your RAM. Sometimes, this problem could be resolved by reseating (removing and installing) the RAM. Take note that you should unplug the power cable before performing this step.

3. If your system has a built-in VGA display then skip this step. If your desktop has a VGA Card (the one connected to the monitor) then try to reseat this as well. Most of the time, especially on compaq machines, the VGA card has a tendency to get loose during shipment.

4. On rare cases, i encountered problem with the power supply. Check that the input voltage you're using is correct. Some desktops have 220/110V switches on their power supply. If it is switched to 220V and you're home electricity is 110V then you'll get undervoltage condition and therefore improper voltages will be produced. Please make sure about your home electricity rating, as making mistake here could cause a damaged power supply.


Nov 12, 2008 | Computers & Internet

3 Answers

Compaq evo d500 does not turn back on


If its powering on, but the screen isnt turning on and the computer starts beeping, try replacing the ram.

Mar 15, 2008 | Compaq Evo D500 PC Desktop

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