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Help! PC turns on from case power button but shuts down shortly after.

Case: Aerocool-1000
MB: P8Z68-V Pro
CPU: i5-3340
PSU: CX500M
RAM: 2x4GB Crucial Sport 1600mhz, 1x8GB Hyperx red 1333mhz
OS: Windows 10 on Kingston 120GB
HDD: 2x 500GB
GPU: EVGA GTX 750 ti ftw
PCIe: Sound card and Network card

So the problem is the pc will turn on but wont boot from the case power button, it turns itself off shortly after. However if I use the power button on the MB or hold down the memcheck button it will boot to BIOS and I can choose the Kingston drive to boot from there. I have changed boot priority so the OS drive is the first to boot, however it seems like I always have to go through the BIOS to boot the PC.

Please help!
10 answers Last reply Best Answer
More about turns case power button shuts shortly
  1. guess you just built the pc? Did you plug the Power SW,HDD Led etc cables correctly?
  2. slyverine said:
    guess you just built the pc? Did you plug the Power SW,HDD Led etc cables correctly?


    Pretty sure I have but will double check tonight, if the + & - are the wrong way round, would this be a cause of the issue?
  3. Most probably isn't but we have to narrow down the problem , it's just strange it works if you press the buttons on the motherboard and it doesn't when you press the power button.
  4. Ok checked the front port umbilical's and they're all in the right place. I've taken out the one stick of 8GB RAM 1333mhz and it's not really changed much, I can still only really get into windows through the bios, the front power button does sometimes take it to booting up after a couple of tries.
  5. is your motherboard new?have you checked the CMOS battery?
  6. slyverine said:
    is your motherboard new?have you checked the CMOS battery?


    MB was bought second hand as working, and my problem has slightly changed.

    Ok so now the majority of the time (If not always) the pc will boot with the case power button, I have disabled marvel controller because that was throwing up an error message each startup which was a pain, but I will hit an error message that says overclocking failed press F1 to enter setup.

    Now other than clicking on performance rather than normal or quiet in the BIOS screen and changing the RAM in AI tweeker to 1600 rather than 1333 I have done no overclocking, and the RAM shouldn't count as overclocking as this is what the set I have left installed in the board runs at.

    The latest Bios is installed however the board does not support windows 10 so I don't know if this is the reason for any problems I'm having.

    Any help appreciated and thank you so much :)
  7. Best answer
    The message says "overclocking failed" simply because the company expects that most boot failures will be caused by overclocking. What it means is "boot failure, now using "safe" settings"

    Try clearing the CMOS . shutdown and unplug pc, remove the battery for a while and then reseat it. This will clear the CMOS.

    I had a similar problem with a computer that i use in my work, it would sometimes not work and after many drains etc it would open with overclocking failed errors .After some time it died it just wouldn't boot anymore with 2 beeps which was the parity circuit...
  8. slyverine said:
    The message says "overclocking failed" simply because the company expects that most boot failures will be caused by overclocking. What it means is "boot failure, now using "safe" settings"

    Try clearing the CMOS . shutdown and unplug pc, remove the battery for a while and then reseat it. This will clear the CMOS.

    I had a similar problem with a computer that i use in my work, it would sometimes not work and after many drains etc it would open with overclocking failed errors .After some time it died it just wouldn't boot anymore with 2 beeps which was the parity circuit...


    I will try this tonight when I get home from work and then update you on the result.

    As a side note, if I choose restart from the windows options or press my reset switch, the PC will shut down and not reboot until I press the power button again. I will also see if this issue disappears tonight.

    Thanks for your suggestions so far.
  9. Try it, although with the more responses you give, the more i believe your motherboard is faulty...
  10. slyverine said:
    Try it, although with the more responses you give, the more i believe your motherboard is faulty...


    Crap!

    Well I hope not, but contacted the seller making them aware of the possibility.
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