Question about Dell Dimension 2400 PC Desktop

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Removing cover off Compaq Presario CPU box

The monitor comes on but the computer does not. I get a sign on the monitor that says "No Signal" so it isnot the monitor beside I tried my other monitor to it and the same thing

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  • Dell Master
  • 19,396 Answers

That means that the PC is not starting, probably a bad motherboard , bad PSU o a different hardware fault.

Let me know if the computer has power.

Posted on Jan 06, 2009

  • Ginko
    Ginko Jan 06, 2009



    If the computer has no power at all then it is a faulty PSU.

    If the computer starts up but you have no signat, Try first unplugging the power cable from computer for five minutes.

    If that does not work , then it is an hardware fault, either the motherboard, or another hardware part is faulty,

    The technician will try first removing one of the RAM modules, and start the motherboard with a minimal set of devices (no drives etc.) only CPU, FAN, 1 module RAM, PSU, and if you want switch connection on MB.

    Troubleshooting may be complicated, try unplugging first.


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  • Dell Master
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Check that the power switch in the computer power supply is turned on also check the cables, did you want to kno whow to get the case open? Or?

Posted on Jan 06, 2009

  • Ekse Jan 06, 2009

    The problem is clearly in the computer not starting up at all or the power is unplugged.

    if all cables are correctly and the computer is getting power, and the computer doesn't turn on, The problem maybe a broken power switch, bad motherboard or powersupply.

    If you open the computer, check the small wires going into the front panel and that they are connected to the motherboard, Next I would suggest to try another powersupply and possibly get the current powersupply tested with another motherboard.

    IF the current powersupply works and the computer wont turn on even with a new powersupply the issue is in the motherboard.

    test the powersupply first and report back and we can continue.


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1 Answer

My computer starts up but nothing comes up on the monitor


There are many reasons of this as:
1. Check your power connections
2. Check if your monitor is on or off
3. Check your monitor is working or not by switching it on
4. Check the connection of your monitor from your big box/CPU


If my information helped you the plz give me marking. Thanks

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1 Answer

CPU ON WITH NO SIGNAL TO MONITOR


Make sure your monitor has power and that the VGA cord or USB cord is properly connected. If your monitor has power (power light is on), disconnect the VGA or USB cord from it, but leave the power on. This will tell you if the monitor is working as it shold display a message like self check or no signal detected and then proceed to display a screen saver. If not then I'd suspect your monitor. If the monitor is ok, then try a different cable between your computer and the monitor. If that fails, then your video card may be defective.

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3 Answers

My monitor has kicked into sleep mode and won't "wake up".


Unplug all the Cables from Compaq Presario 5103 CL and leave the Keyboard, mouse and monitor cable pluged in.

Now make sure the power cable of the monitor should be pluged in and the power cable of the tower should be pluged in.

Now to check if the montor is fine just unplug the video cable only which will show no input signal on the screen. If it shows this signal the monitor is fine. Plug back in the video cable.

If the monitor is going to sleep mode it might be possible that the old computer ( Compaq Presario 5103 CL ) is in stand by mode. hit any key on the keyboard and it should come back .

If it is not in the stand by mode then do one thing. Check the same monitor with the new computer. If it is working. Perfect ..!

Do one thing now ..!

Unplug all the cables from your old system and then press the power button for 30 sec and let it go. Now plug the keyboard, mouse and the monitor try again.
If it works Perfect. If not ..!

Then you need to open the tower and check on the processor FAN is it running..? If its not running you will not get the display as the fan is responsible for the display on the screen. Otherwise...!

Check the Tower possibly the Tower is not getting the power.

Try these steps and let me know If it works

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Cpu powers on. Monitor goes to Windows XP and


Dear, This is due loose connection of power cable
(which connect from CPU TO MONITOR). Just check your power, m sure ur problem would be fix out.

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Compaq SR1350NX


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Dec 09, 2008 | HP Compaq Presario SR1300NX (PP195AA) PC...

1 Answer

Blank screen


When you say "When I turn on the computer the monitor acts like it is getting no power", do you mean the light on monitor doesn't come on or it does and it states it has "No Signal"? If it says no signal then it is receiving power just no signal from computer. What kind of connection is it? Digital(white) or analog(blue)? Is the keyboard wireless or is it PS/2?

If the keyboard isn't wireless and you're plugging the monitor in correctly I would say it's a power supply issue. Try changing the outlet you're using and/or bypass the surge protector to plug directly into wall.

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