Can't turn on my pc

This is a discussion on Can't turn on my pc within the Tech Board forums, part of the Community Boards category; Hello, Maybe the title's question is stupid...I have this problem: When I try to start my pc the hdd light ...

  1. #1
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    Can't turn on my pc

    Hello,

    Maybe the title's question is stupid...I have this problem:

    When I try to start my pc the hdd light flashes for a half second and nothing else. If I press again the start button it doesn't do anything, but if I hold the start button for a while (like tha manual turnoff) then I can try another time, but with the same result, till 20-30 intents then (if it wants) it turns on. Afer that, it seems everything works okay (no fan problems, no energy problems)...

    Does anyone have the same problem??
    I'd like to solve the problem by myself I mean without having to carry the pc to the store (I'm afraid they'd say "mmmm... big trouble...you should buy a new one")
    Can you help me? Any idea?

    Thank's in advance
    Niara
    Last edited by Niara; 10-17-2009 at 07:43 AM.

  2. #2
    (?<!re)tired Mario F.'s Avatar
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    Looks like a problem with the power supply unit, perhaps? Maybe it needs replacing.
    The answer in any case cannot be buy a new computer. As you noticed, it works. Besides unless you put it under a press, computer problems are usually dealt with by replacing damaged parts. Not the entire thing.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

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    Ok Mario F. thanks for the help and your time

    Maybe that's all I have to do, I will check it out.

    Niara

  4. #4
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    It could also be that your power supply isn't strong enough for all your hardware. A while back I put some new hardware in my old PC and when I tried starting it, it would start for a second or two and then shut down. I put in a bigger power supply and it worked.
    "I am probably the laziest programmer on the planet, a fact with which anyone who has ever seen my code will agree." - esbo, 11/15/2008

    "the internet is a scary place to be thats why i dont use it much." - billet, 03/17/2010

  5. #5
    Super Moderator VirtualAce's Avatar
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    Definitely a PSU issue. Either not enough power or it's a bad PSU. You could also have a direct short in one of your power cables (I would suspect the 4 pin power connectors) which is tripping the breaker in the PSU.

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    spurious conceit MK27's Avatar
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    Another similar problem I have had is in the switch itself (the connecting wires were loose), so it would occasionally turn itself off, or be impossible to turn on. All I had to do was open the front panel and do a little crude soldering.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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    Quote Originally Posted by MK27 View Post
    Another similar problem I have had is in the switch itself (the connecting wires were loose), so it would occasionally turn itself off, or be impossible to turn on. All I had to do was open the front panel and do a little crude soldering.
    I've never look inside a power supply, but I'm guessing it has some pretty big capacitors in it, so I would avoid tinkering around in there unless I had the right kind of safety equipment (like thick rubber gloves).
    "I am probably the laziest programmer on the planet, a fact with which anyone who has ever seen my code will agree." - esbo, 11/15/2008

    "the internet is a scary place to be thats why i dont use it much." - billet, 03/17/2010

  8. #8
    Malum in se abachler's Avatar
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    Your power supply is overloaded. Either take some unneeded peripherals out of the system, or get a larger power supply. Technically it could also be too large, but thats generally not the case unless you are using an industrial PSU.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

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    Hey lots of comments, thank's all for that, and sorry for the delay on response.

    I'll try to change the PS for an old one (from an old pc I have in a corner); if not I'll buy a new one.

    Thank's
    Niara

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    A last comment, if someone else has in the same problem: for the moment (while I'm waiting for the inspiration to change the PSU) I have unplugged one of the 2 cd/dvd drives and now it works. I know that's not a good solution, but for the moment...

    Thank's
    Niara

  11. #11
    C++まいる!Cをこわせ! Elysia's Avatar
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    You could also underclock your cpu and/or gpu. Both are power monsters.
    I've had to underclock my gpu to play any games since the PSU can't feed it at full power.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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    Hail to the king, baby. Akkernight's Avatar
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    lol, I remember when this repeativly happened for a new PC I bought xP In the end I got my money back
    Currently research OpenGL

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    spurious conceit MK27's Avatar
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    Quote Originally Posted by cpjust View Post
    I've never look inside a power supply, but I'm guessing it has some pretty big capacitors in it, so I would avoid tinkering around in there unless I had the right kind of safety equipment (like thick rubber gloves).
    No, I meant the dippy little plastic front panel switch, not the power supply switch. If it was the power supply switch, I'd have just replaced the power supply. I think this is one of the half dozen times I've touched a soldering iron since high school shop. Don't open the power supply kids!

    Obviously this is not the problem here tho, but boy was I relieved when the thing kept shutting off, then wouldn't turn on, then it turned out to be the first thing I checked and took about 5 minutes to fix. Like dodging a bullet or something.
    Last edited by MK27; 10-22-2009 at 05:29 AM.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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    Right, at the end I bought a new psu and all work's all right. The only problem is that the old psu have the fan in a side, and the new psu has the fan in another side (I forgot to check that in the shop), so I'm not able to fix it in the psu place without set the fan inside the case; for the moment I've left outside.

    Ah MK27, I have opened the old ps (breaking all the warranty precints), just to see what's inside (unplugged, of course).

    And that's all, thanks for your help; for my part the question is finished, and I hope that can be a help for someone else.

    Niara

  15. #15
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    Quote Originally Posted by Niara View Post
    Ah MK27, I have opened the old ps (breaking all the warranty precints), just to see what's inside (unplugged, of course).
    Unplugged or not, capacitors continue to hold an electrical charge long after the power has been cut off and can be deadly. My electronics teacher said a friend of his touched a screw driver to a big capacitor in a large speaker/amplifier one time... The guy was thrown across the room and the end of the screw driver was melted.
    "I am probably the laziest programmer on the planet, a fact with which anyone who has ever seen my code will agree." - esbo, 11/15/2008

    "the internet is a scary place to be thats why i dont use it much." - billet, 03/17/2010

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