Question about HP Compaq Presario 6430NX (DA237A#ABA) PC Desktop

3 Answers

Install new power supply?

My daughter's computer will not power up at all. Her monitor has a message that says: No signal. Do I just need to go ahead and buy her another power supply or is there something else I can do?

Posted by on

3 Answers

Re: Install new power supply?

Thanks for comments. I will try plugging in power cord direct to wall socket. You were right - It's about five years old. Think I will be willing to invest the $40 in the power supply first, then if that doesn't work guess I know what she's getting for going back to school gift Fall semester!

Posted on Jul 06, 2007

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 624 Answers
Re: Install new power supply?

The no signal message on the monitor just indicates that it isn?t detecting a video signal from the PC. Could be a lot of simple things so I wouldn?t give up on it just yet. 1)Is the computer actually on? 2)What LEDs on the box are on or flashing? 3)Can you hear any noise, beeping, fans, anything? Let us know that plus what operating system and any other pertinent information and we?ll pickup from there.

Posted on Jul 06, 2007

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 98 Answers
Re: Install new power supply?

The monitor is not receiving any signal from the PC. When you push the power button ON, is there any activity on the PC (LEDs on, power supply fan, etc) or it's just dead ? In this case, yes, the first thing to check is the power supply.

Posted on Jul 06, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have nothing to plug p3 and p4 into when all on no signal

Sometimes if a VGA cable is not screwed into to both your Tower and your Monitor, it can get loose and thus resulting in no signal.
Another cause of a Monitor Displaying the no signal message would be due to the Graphic Card failing, or possibly due to the Graphic Card not correctly being seated.

Other Thoughts
Usually P3 and P4 refers to a cable on your power supply that needs to be attach to your motherboard to supply extra power.

If your P4 cable is not plugged in before turning on your computer, this will also result in your Monitor displaying the no signal message.
Keep in mind though, if your computer has not been opened or is not a custom built PC, you should not have to worry about such issues as your P4 cable should in theory be connected. However I guess safely checking won't hurt anyone.

Mar 30, 2015 | PC Desktops

1 Answer

I have a dell studio 540 desktop, I need to restore to factory settings but my monitor will not stay open. It opens for a few seconds then immediately goes into power saver mode and turns off, how can

I see two things here, but need clarification;

1) Monitor goes to Power Saver Mode, then turns -> OFF?

Sure that monitor didn't go into Standby Mode?

2) Why are you performing a restore back to factory settings?
Pick up a virus?

The monitor receives a signal. A video signal. The video signal comes from the computer.

If the monitor is NOT receiving a video signal, then the monitor will state No Signal.
This is for older monitors.

New monitors do not state No Signal anymore.
It's Power Saver Mode, or Sleep Mode.

If the monitor is truly OFF, the Power On button will Not be lit up.
Or the Power On LED light on the monitor.

Monitor power on LED is lit, or Power On button is lit?

Monitor is not receiving a video signal;

Use a monitor cable from a KNOWN to be working monitor, for a temporary test.
Use a Known to be working monitor, and it's monitor cable.

Need to find out if monitor cable is good.

Monitor cable checks out good?

Then problem is computer.

The two leading issues with desktop computer failure, is;

1) Computer is dirty inside
2) Power Supply inside computer is bad.

Please post back in a Comment.

Mar 27, 2013 | PC Desktops

1 Answer

Why does my computer say no imput signal

If you have used a desktop computer or have a dual-monitor setup, you have likely seen the "No-input Signal" error message on your computer monitor. The error message may point to a number of culprits. Accordingly, the solutions run from simple to complex. Prior to attempting advanced troubleshooting methods, check the connection first. Power off the computer and the monitor. Remove the cable that connects the monitor with the computer, then reseat it. Try a different port, if possible, then reboot the computer.
Connect the monitor to another computer if possible to eliminate the monitor as the faulty hardware. Shut down the computer. WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. - rules Only work inside the computer case when the power has been switched off and disconnected. Never open the power source. Some of the below steps recommend removing physical parts within the computer. While in the computer it is highly recommend that you be aware of ESD and its potential hazards Remove all cables and devices plugged into the computer. Make a note of the port into which your monitor is plugged. Remove the left side panel when facing the front of the case. Unscrew screws or manipulate latches to remove the side panel. This process varies according to the type of case you have. Please consult your manual if you are unsure of how to remove the side panel. Attach the antistatic wrist bracelet's clip to a metal object, then ******** the bracelet. Locate your video card. (This will be the card that contains the port with which your monitor interfaces.) Remove the slot cover screw that secures the card into the slot. Remove any power cables that connect the video card to the power supply. Pull the card out of the slot. Examine the gold pins to check for any damage. Reseat the card if it physically appears to be undamaged. You should hear a click once the card is secure in the slot. Screw in the slot cover screw. Attach the power cable from the power supply unit, if applicable. Leave the case open for now. Reconnect only the monitor, power cable and any devices required to boot the computer, then restart the computer. Shut down the computer again if you receive the "No-input Signal" error message again. Remove any cables and devices you plugged in to restart the machine. Remove the video card with a spare or replacement by following the instructions above. Connect necessary cables and devices to reboot the computer, then restart it. Shut down the computer and remove cables and devices if the display still won't work. Unplug the power supply's cables from all devices on the motherboard. Make a note of each plug-in so that you can correctly connect all devices with the new power supply. Remove the screws that mount the power supply. Fit the new power supply into the mounting area, and screw in all screws. Attach all required power cables to devices connected to the motherboard. Attach the cables and devices required to start the computer. Reboot. Hope this helps.

Dec 07, 2012 | PC Desktops

1 Answer

My e machines home computer won't come out of.

Power save mode is just the message a monitor will display when there is no video signal from the computer to the monitor.

If the computer has no lights the problem is most likely the power supply and it will need to be replaced. Pretty easy to do, youtube it for tons of videos.

It also could be the motherboard is bad. I would start with the power supply first.

Dec 02, 2012 | PC Desktops

3 Answers

Acer ASpire M1100 shows No Signal on monitor

Any time a monitor says "no signal" that message is originating from the monitor itself, and not from the computer. A monitor in a room by itself with no computer will say "no signal" for a brief time, if it is turned on. So, if you have tried other monitors also with no luck, then the problem is either the video adapter of the computer, or something that is keeping the computer from booting in the first place (power supply, hard drive, memory, motherboard). A power supply can be tested with an inexpensive tool. Everything else needs either a swap out with a known good stand-in, or else an expensive tool to know if it works.Does the fan come on when you turn the computer on? If so, maybe more likely to be the motherboard, hard disk, or memory. If not, more likely to be the power supply.

Feb 02, 2012 | PC Desktops

1 Answer

When i on my desktop it show blue screen and says no signal analog

That means that the monitor is not getting a signal from the computer. There are several possible issues involved. 1) Make sure that the computer tower is on. 2) Check that the video cable is connected to the active port on the desktop. (Computers often have video connections on the motherboard and an added video card. The motherboard connection is disabled when the video card is active. Similarly if there are several ports (VGA, DVI, HDMI, Display port) only one may be active.) 3) Try a new video cable (if possible) and one of the other video ports (again if possible). 4) Try connecting a different monitor to the computer or connecting this monitor to another computer.

Open up the computer and check if the card requires a separate power connection to the power supply. Make sure it is plugged in. Do the fans in the computer spin up?

If a second monitor doesn't work or the monitor works on another computer, then the problem is with the video adapter on the computer, the power supply or the power switch. Please add a comment with more information about the type of desktop and the current video graphics adapter (on the motherboard or separate card). I will provide additional help if possible.

Cindy Wells
(who has a computer in the company that needed a new monitor (power supply failed) a few months ago and lost the fan on the video card last week. Without the fan, the card overheated and shut down. Thus no signal to the monitor.)

Oct 02, 2011 | PC Desktops

1 Answer

A message of " entering power save" keeps popping up on my screen It won't allow me to log on, what 's the problem?

The computer isn't sending a video signal to the monitor. The monitor goes into power saver mode.

Problem could be as simple as the monitor cable is bad.
More than likely you have a bad Power Supply.

(If the computer is dirty inside, as well as the inside of the Power Supply, it's a good bet)

Do you wish to know a simple method of testing, whether the problem is the Power Supply?

Jun 26, 2010 | Dell Inspiron 530 Desktop Computer

1 Answer

I turn on my computer but my monitor says there is no signal

hello, try to unplug the cables on your desktop, then plug it again, sometimes its loose, or sometimes the power supply on your computer is not functioning properly.

Nov 02, 2009 | PC Desktops

2 Answers


Is the CPU fan running?

Oct 21, 2007 | PC Desktops

Not finding what you are looking for?
HP Compaq Presario 6430NX (DA237A#ABA) PC Desktop Logo

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP PC Desktops Experts

Fred Sops

Level 2 Expert

271 Answers

john smith

Level 2 Expert

366 Answers

 Mike M
Mike M

Level 3 Expert

3320 Answers

Are you a HP PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides