Windows 10: PSU works on one motherboard but not the other

  1.    06 Jun 2016 #1

    PSU works on one motherboard but not the other

    So I just finished my build. I'm on Windows 10 64 bit. Specs are:

    • Intel Core i5 4690k @3.5ghz
    • Silverstone RVZ02 Case
    • Cryorig C7 CPU cooler
    • Crucial Ballistix 16gb 2 x 8b Ram
    • mitx Asrock Motherboard -
    • Western Digital Caviar Black 1tb
    • Gigabyte GTX 660 2gb
    • Corsair ATX 750w PSU -

    So I shutdown my pc lastnight then flipped the psu switch off, this morning take a crack at disassembling the riser card from the pcie slot, reassemble the gpu and riser card again, then go to turn the system on and........ nothing. I disconnect the riser and gpu, disconnect the hd, ram, etc, still nothing. Put the PSU in my old case hook it up to the old motherboard, boots up instantly.
    I should note that the case was open with the motherboard exposed as well as the psu sitting on my desk until i get an sff corsair 450w. Before this i was having trouble with display drivers not working properly on my gpu on this build. The gpu and hd and psu are from my previous build and they all worked together flawlessly. So I am not sure if this is from the psu or the motherboard. I should also note upon powering off the psu I heard a faint buzzing sound.
      My ComputerSystem Spec

  2. philc43's Avatar
    Posts : 3,598
    64bit Win 10 Pro ver 1809 Build 17763.55 and W10 Insider Build 18262
       06 Jun 2016 #2

    Make sure the on off switch from the PC case has not got disconnected from the motherboard.
      My ComputersSystem Spec

  3. jds63's Avatar
    Posts : 3,108
    Windows 10 Pro 64 bit
       06 Jun 2016 #3

    Buzzing sound could be the fan or if it was not mounted properly this is what it could be to. Seems something was not connected as Philc said. If worked on another PC it shows to be working o.k. and 750W should be enough for that graphics card, watts and amps. Going back to display drivers what was thee exact issue because everything was powering up then ?
      My ComputerSystem Spec


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