Windows 8 and 8.1 Forums


Self Built PC Power Issue

  1. #11


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Click image for larger version

    No screws?

    Are the posts metal underneath these screw holes?

    Or are they plastic nubs?

      My System SpecsSystem Spec

  2. #12


    Hafnarfjörður IS
    Posts : 4,376
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Quote Originally Posted by Brooklyn567 View Post
    Click image for larger version

    No screws?

    Are the posts metal underneath these screw holes?

    Or are they plastic nubs?
    They can be be plastic nubs or Metal posts - depends on the case - You don't want any part of the Mobo actually touching the metal bottom of the case either. !!! But if you have metal posts on your case then when fitting the screws don't forget to fit the insulating washers (look like thick cardboard washers).

    Note also that some Mobos won't power on UNLESS THE POWER LED IS CONNECTED -- I have spent AGES in the past wondering why at switch on NOTHING - No fans or anything. Once the power led was connected and you switched on the computer from the CASE power on button --it all worked -- don't forget to connect the RESET (Re-Boot) LED as well.

    Just have the monitor connected too -- even before you add disks / memory etc etc. The BIOS should show on the screen - then add the components individually and test at each stage. Don't worry about the OS until all the components have been recognized by the BIOS.

    BTW if you find your PSU doesn't have enough SATA power connectors you can use the standard 4 pin IDE type===>SATA adapters -- very cheap and easy to find.

    Cheers
    jimbo
    Attached Thumbnails Attached Thumbnails power.png  
    Last edited by jimbo45; 07 Jun 2013 at 03:00.
      My System SpecsSystem Spec

  3. #13


    How about go outside and drop m/b from as high as you can ------ just jokin

    Check psu cable is plugged into m/b the correct way round - yes happened to me

    Put mains on, press and hold front power switch, unplug mains lead and reinsert plug with power on a couple of times and then try as normal.

    Does cpu fan click or try to move when you switch on

    Have faith it can be sorted

    For Brooklyn567 suggest you check where question originator is from, e.g. UK does not like 115/120 as voltage is 220/240 so could cause damage.

    Keith
      My System SpecsSystem Spec

  4. #14


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Good point Kaybee thanks..
      My System SpecsSystem Spec

  5. #15


    Sydney Australia
    Posts : 2,941
    Windows 10 Pro 64bit


    Unplug all hard drives and optical drives and see if can post.
    If it posts replace the drives one at a time to see what one is causing it to not post.
      My System SpecsSystem Spec

  6. #16


    Posts : 7
    Windows 7 64-bit


    Thanks for the suggestions. I really appreciate them! Unfortunately though, there are still no signs of life from the motherboard and CPU.

    There are screws that attach the motherboard to the case and they screw into metal posts. There's also a metal stud. I don't actually have any insulating washers though! I've checked through the list of box contents everything that came with my case and motherboard and can't find anything resembling them. The PC did boot fine without them for months before this happened though.

    To rule out the short circuiting due to contact with the case, I actually took the motherboard out of the case and rested it on a wooden table whilst I carried out all of the suggested diagnostic tests.

    I'm thinking this now means that parts need RMA-ing. If so, should I RMA everything that could be damaged (motherboard, CPU and memory) or just one part at a time?
      My System SpecsSystem Spec

  7. #17


    Do not use insulating washers on the metal posts or the screws, they are meant to be grounded.
      My System SpecsSystem Spec

  8. #18


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Agreed, dont use the washers, I have never used them..

    Before you put it back together if thje system is still out, try swapping the ram locations from the white to the blue slots.

    Count the number of metal posts before you put the motherboard in, then count the number of screws you put it.

    Make sure they are the same number...
      My System SpecsSystem Spec

  9. #19


    The first thing I check when installing an MB is the alignment of holes on the MB against standoffs and make triple sure they are not in the wrong place and there's no extra ones. Modern MBs are lacquered but still, metal standoffs can make a short circuit, if not immediately then after some time and ruin the MB. Be careful, very careful. Had a case once when somebody even installed an MB without any standoffs, needless to say what an effect it had (a hint, smoke involved)
      My System SpecsSystem Spec

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Self Built PC Power Issue
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