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Weird System Booting Up Issue

Hi, I'm new to the forum so please pardon me if this is not the right place to ask this.

I have recently built a new rig and it was working fine for about a month. Last few days, whenever I cold power on the system, the motherboard would light up and fans spin for a second before it turn off itself. Without touching anything, the system would power up again after 2-3 seconds later and it would work fine after that. I could shut down windows and power it up again without issue. It would only happen if I cold boot it.

I have tried searching in forums and most people who are facing "similar" issue are dealing with bad PSU. By "similar", I mean their system wouldn't boot up at all.

So, has anyone encountered anything like this before? How would you suggest I diagnose this?
10 answers Last reply Best Answer
More about weird system booting issue
  1. Welcome to Tom's Hardware Forums,
    While it may be a PSU issue, the more likely explanation is ram - the restart is BIOS's attempt at configuring the ram's timings and frequency. I'm going to make an assumption here, that all four ram banks are filled in a 2x4GB, 2x2GB configuration - if so, try pulling the two 2 GB modules and running with only 2 modules installed. If a different configuration, please explain (a link to the specific modules involved may help)
  2. I had this exact problem with my old FX6300 based build when i replaced my power supply for a larger one it stopped doing it, what are your system specs?
  3. C12Friedman said:
    Welcome to Tom's Hardware Forums,
    While it may be a PSU issue, the more likely explanation is ram - the restart is BIOS's attempt at configuring the ram's timings and frequency. I'm going to make an assumption here, that all four ram banks are filled in a 2x4GB, 2x2GB configuration - if so, try pulling the two 2 GB modules and running with only 2 modules installed. If a different configuration, please explain (a link to the specific modules involved may help)


    Thanks for your response. The RAM I'm using are actually transferred from my old rig. They are 3 x 4GB Kingston HyperX Genesis DDR3-1333 RAM.

    I will try out your suggestion tonight and see if that works. Thanks!
  4. Darth Rache said:
    I had this exact problem with my old FX6300 based build when i replaced my power supply for a larger one it stopped doing it, what are your system specs?


    CPU: i7 4770K
    CPU Cooler: Corsair Hydro Series H100i
    Motherboard: ASUS Maximus VII Hero
    RAM: 3 x 4GB Kingston Hyper-X DDR3-1333
    HDD: Samsung SSD 840 EVO 256GB
    HDD#2: Western Digital 1TB
    GPU: ASUS GTX 770 DirectCU II OC 2GB SLI
    Chasis: Corsair Obsidian 900D
    PSU: Seasonic Platinum P1000

    Just curious, can anyone see my signature? I posted my PC specs there.
  5. jeremychin said:
    Just curious, can anyone see my signature? I posted my PC specs there.

    Yeah, it's there, that's where I found your 12GB ram listed and the PSU, which once considered, I ignored since it's quality is not doubted (yet)
    I'm going to stay with ram for a bit and suggest trying just two sticks in the red DIMMs - see if any change in behavior
  6. C12Friedman said:
    jeremychin said:
    Just curious, can anyone see my signature? I posted my PC specs there.

    Yeah, it's there, that's where I found your 12GB ram listed and the PSU, which once considered, I ignored since it's quality is not doubted (yet)
    I'm going to stay with ram for a bit and suggest trying just two sticks in the red DIMMs - see if any change in behavior



    Okay, problem still persists. Below are the things I have tried:



    It still behave the same when I tried all the above. Funny thing is it still happens when I removed all the RAM modules and both GPUs.

    Any other things I should try?

    [Edit] I also tried clearing CMOS too.
  7. With that information, now it's time to start looking at power. I'm thinking the PSU being bad is unlikely - thinking more the motherboard's VRM - a bad capacitor could cause that as well as a bad transistor in the VRM section. It could even be an issue with the CPU's memory controller (low likelihood). I think I would start with the motherboard, you'll need to contact Asus about RMA procedures.
    If you have a multi-meter available, you could check the PSU's voltages but again, I'd be more than a little surprised if voltages are out of specs from that PSU (not that it can't happen...)
  8. Best answer
    C12Friedman said:
    With that information, now it's time to start looking at power. I'm thinking the PSU being bad is unlikely - thinking more the motherboard's VRM - a bad capacitor could cause that as well as a bad transistor in the VRM section. It could even be an issue with the CPU's memory controller (low likelihood). I think I would start with the motherboard, you'll need to contact Asus about RMA procedures.
    If you have a multi-meter available, you could check the PSU's voltages but again, I'd be more than a little surprised if voltages are out of specs from that PSU (not that it can't happen...)


    Seems like the "double-boot" phenomenon is a normal power cycle, as explained in this thread from ROG forums.
  9. So it is a memory "training" thing, makes sense. I wouldn't expect that from a 1333MHz kit though. Seems a little weird but as long as it isn't a "problem"...
  10. C12Friedman said:
    So it is a memory "training" thing, makes sense. I wouldn't expect that from a 1333MHz kit though. Seems a little weird but as long as it isn't a "problem"...


    I'm glad too! :D
    As long as it's not my mobo problem! Now I can continue tweaking it.

    Thanks for your help. Really appreciate it.

    Okay, noob question. Should I mark my previous response as answer? How do I do that?
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