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

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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?

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  • Gloria Loring Jul 06, 2007

    When we push the power on button there is nothing. No flashing lights, fans, beeping sounds... nothing. Operating system is the Windows XP Home Edition

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3 Answers

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

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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

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  • Anonymous Jul 06, 2007

    The first thing to check is to plug the power cord from the computer box directly into a working wall socket.

    Some Compaq?s have a separate power rocker switch on the back; if you have one it should be on ?1? for on.

    If that isn?t it the next thing is to try another power cord if you have one.

    If those don?t work then the next step depends on how much more effort/money you are willing to put into a five+ year old PC. The leading candidates are going to be power supply, power switch or motherboard so even if we guess right the first time you are going to spend at least $40+ on a power supply. When you consider a new PC can be had for $400 and up you should at lest consider your options before proceeding.

    Let us know.

  • Anonymous Jul 06, 2007

    How old is your PC? My first search said that model had a P2 orP3 processor, however, another said it is fairly recent. If it is relatively new my apologies for suggesting you consider scraping it. Let me know.....

  • Anonymous Jul 07, 2007

    For anyone trying Pastorn's power supply test please exercise caution. Shocks, even low voltage ones, are not pleasant and sometimes dangerous.

    As an alternative for $10 or $15 you can pick up an inexpensive power supply tester at CompUSA or BestBuy. In fact if you take your old power supply to your local computer repair shop they may even be willing to do a quick test for free if you buy the replacement there.

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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

  • Marcelo Pastorino
    Marcelo Pastorino Jul 06, 2007

    If you want to go one step further, check the power supply. On some power supplies, specially ATX style, you can test it by unplugging everything from it, short the green and any of the black cables with a paper clip, and then plug it to the wall and turn it on with the switch. The fan should come on if the power supply is OK.

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