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Trying to diagnose problem, motherboard or cpu?

I have been working on a PC build for a while now and have been having a lot of trouble with it.I am using an Asus Sabertooth 990fx R2.0 motherboard and an AMD fx-6300 cpu. The first time I booted it up the cpu component light was red indicating there was a problem with the cpu so I sent it back to AMD for a replacement. Now even with the replacement cpu I am having the same problem. I find it hard to believe I have gotten two bad cpu's in a row. I tried calling Asus about it and was told it might be an issue of updating the software on the motherboard as it might be using something older than what the cpu is using. Also I am unable to get the PC to shut-down with just the case power button. Could this be an issue with the motherboard, cpu, or something else entirely?
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More about diagnose problem motherboard cpu
  1. Then have you updated the bios as recommended?

    Post your complete and detailed build.

    Have you gone through Bios and made the required settings? Read the mobo manual.


    Have you set bios to shutdown on power outage?
  2. did you connect the 8pin power cable for the CPU? Do you have another CPU or Mobo to test?

    That cpu needs BIOS version 1006 to work on that board so keep that in mind
  3. i7Baby said:
    Then have you updated the bios as recommended?

    Post your complete and detailed build.

    Have you gone through Bios and made the required settings? Read the mobo manual.


    Have you set bios to shutdown on power outage?


    my build is:
    Rosewill Thor V2 Tower
    Asus Sabertooth 990fx R2.0
    Amd fx-6300 cpu
    XFX XTR 650w power supply
    G.Skill Ripjaws X series 8gb (2x4 gb)
    LG black blu-ray drive
    Seagate Constellation 1tb 7200 rpm 128 mb hard-drive
    Samsung 840 pro series 128gb solid-state drive
    Asus GTX 660 2gb 192-bit graphics card

    I don't understand how I'm supposed to update the BIOS if I can't get anything to come up on-screen.
  4. i7Baby said:


    Nope it does not POST. I started going through the checklist and was wondering, for #2 do I only need the 4/8 pin CPU power connector plugged in or do I also need the 24 pin connector plugged in? What is the difference? If you haven't already been able to tell this is my first PC build haha.
  5. Best answer
    Both.
  6. Well that looks like it was the problem. Can't believe it was something as simple as that, thank you!
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