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  1.    31 Dec 2016 #1
    Join Date : Aug 2015
    Posts : 56
    Windows 10 64-bit

    Motherboard power light (PS_SW) is flashing and system wont boot up


    The problem is in the thread title; normally my PS_SW light stays a solid yellow and I'm able to boot up no problem. After moving my computer around the house a bit, when I plugged everything in the light was flashing yellow and is now unable to boot up. All the build information (including motherboard info) is in my profile. I looked through the manual for my motherboard (available here: GIGABYTE - Motherboard - Socket 1155 - GA-Z77X-UD5H (rev. 1.0) ) and it was totally useless. It does not seem to be blinking in any pattern, just a steady blink on and off. Any assistance would be greatly appreciated--I'm really out of my depth here.
      My ComputerSystem Spec
  2.    31 Dec 2016 #2
    Join Date : Jun 2014
    Posts : 5,527
    Windows 10 Pro

    Check inside the computer to see if any connections came loose or unplugged.
      My ComputerSystem Spec
  3.    31 Dec 2016 #3
    Join Date : Aug 2015
    Posts : 56
    Windows 10 64-bit
    Thread Starter

    Yeah, I've tried that. This actually happened a couple weeks ago and was solved by my lightly pressing on the processor heatsink. I've tried gently testing every component though and it hasn't changed.
      My ComputerSystem Spec
  4.    01 Jan 2017 #4
    Join Date : May 2015
    Posts : 1,645
    Win 10 X64 Pro 15063

    Quote Originally Posted by Zibeltor View Post
    Yeah, I've tried that. This actually happened a couple weeks ago and was solved by my lightly pressing on the processor heatsink. I've tried gently testing every component though and it hasn't changed.
    Yikes.

    That sounds like the CPU isn't making good connections. I've never had that happen.

    I suppose that you could remove the heatsink and CPU, and then re-install them. Seems unlikely. Did you drop the case at any time during the moves?
      My ComputerSystem Spec
  5.    01 Jan 2017 #5
    Join Date : Aug 2015
    Posts : 56
    Windows 10 64-bit
    Thread Starter

    No, I thought I was very gentle with the case. That seems like a reasonable next step though; I'll try reinstalling the processor in the morning. Thank you for the advice! Happy New Years!
      My ComputerSystem Spec
  6.    01 Jan 2017 #6
    Join Date : Dec 2016
    Posts : 5
    Mixed

    It could be your ram has died my pc did that a week ago got some new ram and it worked again
      My ComputerSystem Spec
  7.    01 Jan 2017 #7
    Join Date : Aug 2015
    Posts : 56
    Windows 10 64-bit
    Thread Starter

    Alright, well, I may do that. Reinstalling the processor didn't change anything. Are there any other recommendations? I'm kinda hesitant to just start buying/testing parts without really knowing what the issue is.
      My ComputerSystem Spec
  8.    01 Jan 2017 #8
    Join Date : Jun 2014
    Posts : 5,527
    Windows 10 Pro

    I recently had a problem something similar to you. I did manage to get my computer to work great for awhile. It only worked for a short time before finally dieing on me. After trying everything including different ram and a new power supply I figured it was either the motherboard and/or the cpu. The only thing that would power on was the fans. I didn't even get the beeps when I tried starting the computer with the ram removed. I hope yours is cheaper to fix than what mine was.
      My ComputerSystem Spec
  9.    01 Jan 2017 #9
    Join Date : Aug 2014
    Forever West
    Posts : 3,922
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Reseat the RAM modules and any add-in card/s. Blow the dust out [take it outside], these can cause issues as can a bit of corrosion [usually unseen] on the contacts of anything that plugs in.
      My ComputerSystem Spec
  10.    01 Jan 2017 #10
    Join Date : Aug 2015
    Posts : 56
    Windows 10 64-bit
    Thread Starter

    I did buy some new RAM and did as Berton recommended--reseating all my cards and blowing them out with compressed air before putting them back in. I also tested both sets of RAM modules on my board. Based off Winuser's input, the process of elimination leads me to think it's my mobo or CPU. My PSU is fairly newly installed. I felt like I've been wanting an upgrade for my CPU anyway. Can anyone recommend a reliable, durable board for a 5th generation processor (thinking abut getting the Intel Core i7-4790K). I've seen someone recommend the ASROCK Z97 Extreme9, but that's pretty pricey/difficult to find.
      My ComputerSystem Spec

 
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