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Problème de démarrage PC

Last response: in Components
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November 10, 2012 8:38:48 PM

Bonjour,

J'ai récemment eu un problème avec mon PC (qui ne date pas d'hier pour être honnête) : il ne démarre plus.
Lorsque j'appuie sur le bouton de mise sous tension, le voyant s'allume, mais il ne se passe rien de plus.

Quand je regarde à l'intérieur au moment du démarrage, les ventilateurs (celui du processeur et celui de l'arrière du boitier) se mettent à tourner très très brièvement, puis finissent sur leur élan et s'arrêtent. Comme s'ils recevaient une unique impulsion, et plus rien. Et ensuite, terminé, il ne se passe plus rien du tout. Le voyant reste allumé, mais c'est tout.

Déjà vérifié :
- les pins du socket du processeur semblent intactes
- le processeur lui-même n'a pas l'air endommagé
- les barrettes de mémoire sont bien enfoncées
- les branchements semblent tous corrects
- les ventilateurs sont bien branchés (vu qu'ils tournent brièvement au démarrage)

Peut-être un problème de l'alim ?
Comment le vérifier ?

Voila, si certains ont des idées, ça m'intéresse ! :) 
Merci d'avance.

More about : probleme demarrage

a b ) Power supply
November 10, 2012 8:57:49 PM

Hi :) 

English please...

All the best Brett :) 
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a b ) Power supply
November 10, 2012 9:22:45 PM

Bonjour, et bienvenue à Tomshardware. Je pense que vous avez un problème avec votre bloc d'alimentation. Publiez vos composants pour l'analyse.
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November 11, 2012 12:14:18 PM

Sorry, I didn't notice it was an english forum ^^
I will try a translation.

Recently, I had a problem an my (7-years-old) computer : it doesn't start anymore.
When I push the start button, the light on the front lights up, but nothing else happens.

When I look into the computer case, on start-up, the 2 fans (the CPU's and the one on the back of the case) start briefly, turn slowly for a while and stop, as if they receive just an impulse. And then, nothing happens. The light spot on the front stays alight.

Already checked :
- socket pins seams all ok
- from the outside, the CPU doesn't seam to be damaged
- memory modules are correctly engaged
- all the connections are ok
- the 2 fans are connected (as they turn on startup)

Could it be a problem form the power supply ?
How to ckeck it ?

If some of ou have an idea, please share :) 

Config (all I can read from the compounds) :
motherboard : P5LP-LE (rev 1.05)
CPU : Pentium D 940 SL 94Q MALAY 3,2 GHz / 4M / 800
power supply : DPS-350AB-7 A
memory : 1 Gb DDR2 PC2-4200U (Samsung) x2
graphic adapter : I can't read a model
2 secondary boards (I don't know what it is) : ?
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a b ) Power supply
November 11, 2012 12:32:52 PM

Hi :) 

Its probably the power supply (psu)...

You check whether it is by substitution...or take it to a local computer repair shop for diagnosis...

All the best Brett :) 
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a b ) Power supply
November 11, 2012 12:37:36 PM

Hey there if you want to see if the power supply still works then disconnect all connectors from the computer but plug it into the wall. Use a U/V bent pin and insert it into a green cable hole and a black cable hole. If the power supply is done then it will not work.

Edit: Hé là si vous voulez voir si l'alimentation d'énergie fonctionne toujours alors le débranchement tous les connecteurs à partir de l'ordinateur mais le branche au mur. Utilisez une goupille pliée par U/V et insérez-la dans un trou vert de câble et un trou noir de câble. Si l'alimentation d'énergie est faite alors cela ne fonctionnera pas.

Hope that makes sense in french, I just translated it online. Anyways if the power supply has been working for 7 years its most likely dead by now.

Espérez que semble raisonnable en français, je juste l'ai traduit en ligne. Quoi qu'il en soit si l'alimentation d'énergie avait fonctionné à ce jour pendant 7 années son le plus susceptible ses morts.
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a b ) Power supply
November 11, 2012 12:47:34 PM

Unless you have added a more powerful Graphics adapter then your PSU is suitable, but not a type that would be recommended in most forums. To check it you will need a voltmeter, instructions below
http://hardwarelogic.com/articles.php?id=5075

Personally I would look for a cheap replacement 350W ATX PSU on Ebay, try to find Corsair, Antec or Seasonic for reliability
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November 11, 2012 3:48:19 PM

Thanks for your answers.
I'll try to diagnose it (if I find a voltmeter), or I'll get it to a repair shop.

I bought the whole computer 7 years ago and didn't change a piece since. The PSU is the original one.

If the PSU is dead, i'll try to change it for a compatible one.
Any advice ? (I already wrote down the 350W ATX from dodger46).

@socialfox : thx for the translation, but I understand english pretty good. I have just difficulty to speak/write it ^^
And, anyways, online translators from english to french doesn't seam to work very well. You english version is more understandable than the french one :) 

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a b ) Power supply
November 11, 2012 3:53:00 PM

^ahaha :lol: 
I know that's why I was a bit nervous of translating it online since my old french teacher used to scold me for using translators. I think they mess up the tense and sometimes the words when getting translated no longer make sense.

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November 25, 2012 10:13:20 AM

I'm back with news : my computer is up !
I tested the PSU : it's dead.
I bought a new one and everything is working now.
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a b ) Power supply
November 25, 2012 11:06:29 AM

Good news! Glad you're up-and-running again. Did you know there's a French Tom's website?
http://www.presence-pc.com/
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November 25, 2012 11:18:37 AM

Best answer selected by Eria.
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November 25, 2012 11:21:29 AM

dodger46 said:
Good news! Glad you're up-and-running again. Did you know there's a French Tom's website?
http://www.presence-pc.com/

No I didn't :D 
Thx
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!