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Thread: Computer Switch Off After Startup

  1. #1
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    Unhappy Computer Switch Off After Startup

    Hi There,

    I'm currently building a computer for someone and have done this lots of times before without error. However, i'm struggling with my current system at the moment.

    Basically, when I switch the system on, I get the motherboard details on the screen, a ram check and the usual. But then suddenly it switches off. I have tried replacing the motherboard manufacturer, the power supply and removing PCI cards to no avial. I'm going mad!! What could be wrong??

    It is a 3.0ghz LGA775 P4 processor, with a gigabyte motherboard and 1gb of Crucial ddr2 memory. I also have an ATI PCI-Express card and a SATA2 hard drive installed.

    Any help on this would be appreciated!!

    Richard

  2. #2
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    • d3fiant's system
      • Motherboard:
      • GB X58A-UDR3 FB11
      • CPU:
      • Core i7 950
      • Memory:
      • Corsair 12GB DDR3 1600
      • Storage:
      • 2x 120GB OCZ Agility SSD + 500GB SP F3
      • Graphics card(s):
      • GB Windforce GTX670 2GB
      • PSU:
      • 850W Akasa
      • Case:
      • Fractal R3
      • Operating System:
      • Windows 7 x64 HP Retail
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      • 24" 1920x1080 Iiyama LED
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      • 60MB VM
    check CPU temp in bios if u can get in, might be HSF not properly mounted and CPU cutoff temp is being reached although it is a very short amount of time for that to happen. Other than that, check CPU temp shutdown setting in bios, if it is set too low it might be the cause. Also try cmos reset

  3. #3
    Senior Member charleski's Avatar
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    I'd say an improperly mounted HSF is almost certainly the problem here. A naked P4 will get very hot very fast.

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    Anthropomorphic Personification shaithis's Avatar
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    • shaithis's system
      • Motherboard:
      • Asus P8Z77 WS
      • CPU:
      • i7 3770k @ 4.5GHz
      • Memory:
      • 32GB HyperX 1866
      • Storage:
      • Lots!
      • Graphics card(s):
      • Sapphire Fury X
      • PSU:
      • Corsair HX850
      • Case:
      • Corsair 600T (White)
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      • Windows 10 x64
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      • 2 x Dell 3007
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      • Zen 80Mb Fibre
    Also, check that you have the CPU heatsink fan connector plugged into the CPU fan header.....many motherboard shut down if it doesn't detect a fan spinning at a certain RPM on that specific connector.
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
    HTPC: AsRock Z77 Pro 4 / 3770K@4.2GHz / 24GB / GTX 1080 / SST-LC20 / Antec TP-550 / Hisense 65k5510 4K TV / HTC Vive / 2 x 240GB SSD + 12TB HDD Space / Race Seat / Logitech G29 / Win 10 Pro
    HTPC2: Asus AM1I-A / 5150 / 4GB / Corsair Force 3 240GB / Silverstone SST-ML05B + ST30SF / Samsung UE60H6200 TV / Windows 10 Pro
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    Laptop: Lenovo Flex 2 / 12GB RAM / 240GB Corsair Force 3 Printer: HP CP1515n || Phone: HTC One U11 || Other: Samsung Galaxy Tab 4 Pro 10.1 CM12.1 / Playstation 4 + G29 + 2TB Hybrid drive

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