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HELP issues with MOBO, suspect faulty need pro advice

I just build my first pc and have been encountering issues from day one... First day after i finished my build everything worked fine but after leaving comp off for 3hrs and Turing it back on it would power cycle, i thought psu was dead so i exchanged it... Now after psu is replaced and i left pc off for a night it started power cycles again so i removed my second stick of ram and it posted fine, i ran mem test on both sticks of ram and they passed with flying colours.. Also i had issues with booting after replacing psu and using it for a bit, on my mobo it came up with an error code a0, a sata issue... Should i dismantle my pc and rma the mobo or is it another issue

System spec,
cpu : I5-4670k
Cpu cooler : H100i
Ram : F3-12800cl9d-8gbxl ripjaw ram 2x4gb
Gpu : Gigabyte wind force r9 280x
Mobo : Asrock z87 extreme 4
Psu : cosair hx-650 v2

Thx for reading my terrible description and thank you in advance
6 answers Last reply Best Answer
More about issues mobo suspect faulty pro advice
  1. Best answer
    Hi, With single RAM module test each motherboard slot. See if successfully booting in each situation.
  2. Yea it does, it works when i reseat them, single or even dual
  3. Then can you explain again the issue?

    "Now after psu is replaced and i left pc off for a night it started power cycles again so i removed my second stick of ram and it posted fine"

    I understand that with single RAM the system works OK, but not with both RAMs?

    Then you say
    " Yea it does, it works when i reseat them, single or even dual"
  4. The problem is after i leave the pc off for over 2hrs it will not post but go through power cycles, when i reseat ram it works again. I had psu rma and replaced
  5. I understand now. It looks like a motherboard issue. Have you tried clearing the CMOS or updating the BIOS (if newer version available)?
  6. I will try now and see how things go tomorrow morning
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