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Dead computer

Discussion in 'Hardware' started by postman, Jul 27, 2008.

  1. postman

    postman Byte Poster

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    I found an old PC in the house so I decided to see if it would work but whenever I plugged it in all I got was the green power light in the front and nothing else, no fans running, no beep, nothing at all. I opened it up and everything seems plugged in and secure.

    So my question is - Is the PSU broken or is there something else I've missed?
     
    WIP: A+
  2. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    get a hold of a multimeter and test the psu to see if its ok, if it is then I would say it's your mobo.
     
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  3. NightWalker

    NightWalker Gigabyte Poster

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    PSU is the most likely culprit.
     
    Certifications: A+, Network+, MCP, MCSA:M 2003, ITIL v3 Foundation
  4. grim

    grim Gigabyte Poster

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    strip it down, clean it, re-set the bios and rebuild with minimum spec to boot. sometimes theres a small chance it'll work. i dont why but its worked for me several times in the past

    Grim
     
    Certifications: Bsc, 70-270, 70-290, 70-291, 70-293, 70-294, 70-298, 70-299, 70-620, 70-649, 70-680
    WIP: 70-646, 70-640
  5. Sparky
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    Sparky Zettabyte Poster Moderator

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    Good point.

    I had a similar problem with a faulty RAM DIMM. The PC would not boot, no post or anything, took it out and it booted fine. I had taken other components out to test but eventually I found it was one of the RAM DIMMs that was causing the problem.
     
    Certifications: MSc MCSE MCSA:M MCSA:S MCITP:EA MCTS(x5) Security+ Network+ A+
    WIP: Exchange 2007\2010
  6. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    can't recommend this enough for testing psu's. This will place a load on the psu, pull the fan on (if it works), test for output and short's.

    Simon
     
    Certifications: MCSA 2003, MCDST, A+, N+, CTT+, MCT
  7. NightWalker

    NightWalker Gigabyte Poster

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    Nice bit of kit 8)
     
    Certifications: A+, Network+, MCP, MCSA:M 2003, ITIL v3 Foundation
  8. postman

    postman Byte Poster

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    Stripped the computer down and cleaned it out, made sure the ram was properly seated (there is only one stick) then I tried switching it back on but all that happened was the light came on on the front of the case and the CPU fan spins for about a second then stops and then nothing.
     
    WIP: A+
  9. greenbrucelee
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    greenbrucelee Zettabyte Poster

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    have you tested the PSU?
     
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  10. postman

    postman Byte Poster

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    OK. Put in new PSU and all the fans started spinning :D but then I got the smell of smoke and then there was smoke:eek: coming from somewhere (around the power connector), needless to say I turned it off and had a look but I couldn't see any damage:dry so I turned it on again only to find nothing at all:(.

    I can only assume that I've fried the motherboard in some way and that the whole thing is now just a 5og paperweight:cry:
     
    WIP: A+
  11. greenbrucelee
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    greenbrucelee Zettabyte Poster

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    had you installed a new hard drive? or reconnected a drive?

    If the power connector on a hard drive is put in the wrong way, things can go pop

    EDIT: is the PSU on the correct voltage setting?
     
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  12. postman

    postman Byte Poster

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    I decided to open up the pc again and make sure everything was plugged in correctly, took out the ram and turned it around then I switched it back on again and it works:D
     
    WIP: A+
  13. Mitzs
    Honorary Member

    Mitzs Ducktape Goddess

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    Postman don't leave this computer on and unattended. It has already proven that it is a fire risk. Can you tell where the smoke came from or the fire itself?
     
    Certifications: Microcomputers and network specialist.
    WIP: Adobe DW, PS
  14. Mitzs
    Honorary Member

    Mitzs Ducktape Goddess

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    Boyce, I've never even seen one of those before. As mary would say," we live in great times with the technology that is out there and coming out"

    And you my friend are always a great resource. That is going on the wish list even if I don't work on many computers these days. A girl still has to have her geek toys you know. :biggrin
     
    Certifications: Microcomputers and network specialist.
    WIP: Adobe DW, PS
  15. grim

    grim Gigabyte Poster

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    i hope you mean you swapped the dimms over and not that you actually rotated the memory 180 degrees :oops:

    you can re-wire the PSU connector red to black and the PSU will work without connecting it to the mobo

    Grim
     
    Certifications: Bsc, 70-270, 70-290, 70-291, 70-293, 70-294, 70-298, 70-299, 70-620, 70-649, 70-680
    WIP: 70-646, 70-640
  16. postman

    postman Byte Poster

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    I think the smoke came from a dust build up because I hadn't used it for nearly 2 years but you are right I shouldn't leave it on unattended.
     
    WIP: A+
  17. postman

    postman Byte Poster

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    I just took the ram out and installed it the other way around and made sure it was properly seated (I might have made a mistake whenever I reassembled the pc).
     
    WIP: A+

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