PC Shuts Off Randomly

Discussion in 'PC hardware help' started by vdiablo69, Mar 28, 2008.

  1. sammorris

    sammorris Senior member

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  2. vdiablo69

    vdiablo69 Member

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    Ya Ive used this 350W for years now with no problem. I guess installing those new LEDs with the resistors sucked jus enough current to push it over the edge. Especially when combined with 4 case fans and 2 drives in a dual core system. I unplugged my dvd burner for now jus so I could finish my downloads and its been staying on no problems. Ive found a 450W at a comp store in my town for $40 but I think I want to save up to go higher. Thank you guys for all your help and if when I replace the PSU and it doesnt fix it Ill be back
     
  3. sammorris

    sammorris Senior member

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    Trust me you don't want a 450W unit for $40. It isn't about the wattage, it's about the brand. Your PC probably doesn't even use 200W (mine only uses 205W - see my signature for specs), it's just about getting a decent brand PSU.
    NEVER SKIMP ON A POWER SUPPLY.
     
  4. vdiablo69

    vdiablo69 Member

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    So I found a new power supply and replaced my old one. Now when I turn the PC on it jus beeps and nothing on the screen. Not to sure what happened I never touched any components (Ive been assembling and repairin them for a long time). Ive even tried the old PSU and it still beeps. Hopefully its something as simple as the harddrive plugged in backwards. Also I went from 20 pin to 24 pin shouldnt make a difference tho
     
  5. tripplite

    tripplite Guest

    some PSU'S have different voltage settings (like a red ribbon on the back') make yours is set to the level (120v us) for your area......all the pins in right? the IDE for the hard drive set right?
     
  6. lazarus04

    lazarus04 Member

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    Hey vdiablo69, your post caught my attention. I've been having the exact same problem for about a year now. It's gotten so bad that the only way I can get the comp going now is if I unplugg the HD...which is rather pointless. I thought the hard drive was the problem, but now I'm not so sure...How much power does the HD suck up anyway?
     
  7. sammorris

    sammorris Senior member

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    A hard drive uses a large amount of power when first powering up (c.50W) but only a small amount when in use (<10W). Typically it's when powering a PC up that a PSU will fail if it's going to, for precisely this reason. It's caught me out once before. It's almost certainly your PSU at fault, Lazarus.
     
  8. lazarus04

    lazarus04 Member

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    Huh. I wonder if they have good quality psus at Future Shop.

    Thanks for the info sammoris. Imma going psu hunting tomorrow! Haha!
     
  9. sammorris

    sammorris Senior member

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  10. lazarus04

    lazarus04 Member

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    Jesus I know. I just had a look see on their site. All they sell is crap. Gonna hafta break out the visa again...lol.

    Thanks sammoris!
     
  11. vdiablo69

    vdiablo69 Member

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    [/quote]
    some PSU'S have different voltage settings (like a red ribbon on the back') make yours is set to the level (120v us) for your area......all the pins in right? the IDE for the hard drive set right?[/quote]

    lol its set on 115v.
     
  12. sammorris

    sammorris Senior member

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    Yeah, it's bad setting it to 230V when you're in the US/Canada. It's far worse setting a PSU to 115V over here. That equals issues!
     
  13. vdiablo69

    vdiablo69 Member

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    Well it cant get any worse then it is now for me lol. Im using an old comp I found in the alley a couple months ago. Oh well its a computer and gives me my facebook fix lol
     
  14. tripplite

    tripplite Guest

    you'd be surprised sometimes the ribbon comes of its place and the PSU gets stuck on one setting.....am sorry i got a bit lost where are you now with this issue?
     
  15. vdiablo69

    vdiablo69 Member

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    Ive put the new PSU in and all it does is beep when I try to turn it on. All the connections are tight and I never touched the motherboard or anything else at all. Not to sure whats goin on with it. I cant even find any beep codes online or in my manual.
     
  16. sammorris

    sammorris Senior member

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    Try removing a stick of RAM and see if the system works. If not try removing the other. (this of course assumes you have more than one stick)
     
  17. vdiablo69

    vdiablo69 Member

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    Ive tried removin the ram both sticks and one stick at a time. Ive tried with hard drive unplugged and plugged in. Ive even tried the old PSU and still beeps. I think I fried my motherboard I dont know how but it worked before and now it dont. Id take it in to the computer store where I bought my PSU but I think it would cost the same to buy a new motherboard.

    A lil off topic but at this point I think Im gonna buy a new one anyway. Im lookin at an ASUS Crosshair. Right now I have a AMD Athlon64 X2 6000+ with an AM2 socket. I think with the Crosshair it would support that cpu but I could also upgrade to a quad core in the future.
     
  18. sammorris

    sammorris Senior member

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    I wouldn't bother with futureproofing for an AM2 PC. The latest and greatest AMD Quad core is still very mediocre compared to the intel ones. This may not be what you want to hear or do, but you might be as good to sell your AMD CPU and start with an Intel board, the rest of your stuff will be compatible, RAM included.
     
  19. mmalyszko

    mmalyszko Regular member

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    I know that some people might have mentioned this b4, but from my experience when a PC shuts off after a while, it might be due to RAM failure. You might not know it at or see at first, but id bet anything that thats the culprit. I've had something similar happen to me, although my PC didnt turn off after like 10 minutes off seeding or downloading files. It would always happen at night when id leave my PC.
     
  20. tripplite

    tripplite Guest

    check for little cracks on the board to confirm this......also try taking the bud of a good eraser and cleaning the gold pins on the ram, it was suggested to me by ddp, something about a chemical build up er something......

    -tripplite
     

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