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Computer booted up for 1 second, then shuts down

Discussion in 'Hardware' started by RoronoaDSanji, Dec 26, 2010.

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  1. RoronoaDSanji

    RoronoaDSanji Thread Starter

    Joined:
    Dec 26, 2010
    Messages:
    2
    hi all, first post here :D not sure if this is the right section, delete it if im wrong

    today, i bought a new hard drive cause my first one is fulled, after putting it in, the computer wont boot up anymore (well, the fan, and case light went on for less than a second) notthing appeared on the screen or anything. no beep either.

    here is what i got:
    i7 920
    asus p6t
    g.skill 6gb
    first hard drive : western digital black 640GB
    new one: WD green 1.5TB
    PSU: crosair 750W
    GTX260

    i think the 750W is more than enough for everything listed above, and it worked fine before i opened up my computer.

    any help would be appreciated, and sorry for bad English,
    if more information is needed, please let me know.

    -------------------------------------------------------------

    edit, just to add more information:
    i also tried pull my new harddrive out, and run everything like it did, and it still didnt work.
     
  2. doctorzeus

    doctorzeus

    Joined:
    Jun 10, 2010
    Messages:
    277
    You didn't knock any of the cables out while installing it did you?

    This could be a number of things, does it make any beeps when you turn it on? Does the motherbord have any diagnostic lights such as CPU, RAM etc?
     
  3. RoronoaDSanji

    RoronoaDSanji Thread Starter

    Joined:
    Dec 26, 2010
    Messages:
    2
    i dont think i knock any out, i tried resecure some of them too.
    no, no beep or what so ever, just fan and case light for half a second, and it only comes on once, after that, i have to turn off the power supply and then turn it back on again in order for the fan to spin again. (not sure that was confusing)

    also, by diagnostic lights, did you mean light that tells you whether the CUP, RAM is working or not? if so, no, it has a green reset button and a red power button though
     
  4. doctorzeus

    doctorzeus

    Joined:
    Jun 10, 2010
    Messages:
    277
    It sounds like some essential piece of hardware (CPU, RAM) isn't working and it can't boot for that reason cause the same thing happens if you take either out and try and start it up..the beeps and the diag lights tell you if there is component missing or failure and usually why its not booting...thats why I was asking if you had any.
     
  5. lewmur

    lewmur

    Joined:
    Sep 10, 2006
    Messages:
    180
    There are two things that will normally cause this. One, there is a wire obstructing the CPU fan. If the CPU fan doesn't turn, the PSU will shut down to keep the CPU from over heating. The second is the PSU itself is overloaded. To test for this, simple disconnect the drive you just installed. If the computer works with the new drive disconnected, then you need a higher wattage PSU to get the new drive to work.
     
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