MSI Z97 PC MATE won't turn on. No beep. PSU is good.

I built this PC on March 2015. The setup is following:

Intel Pentium G3258
MSI Z97 PC MATE
DDR3-1600 4GB Crucial
EVGA GTX 770
500w Diablotek PSU
Thermaltake Commander MS-I Snow Edition <-- my case

The PC was working perfectly for more than 5 month I reckon... when I first built it in March 2015. There was absolutely no sign of failing component. When I wanted to get GPU out I turned it off (I think I forgot to unplug PSU) I touched PSU (bare metal) then I proceed to remove GTX 770 to find it was partly stuck in PCI-E... the handle wouldn't budge. I pressed PCI-E little harder and finally got it. I turned computer on, nothing. Fan didn't start. No beep. No nothing. It was dead.

I stripped everything out expect for this config

MOBO + CPU + RAM + PSU
CPU power is connected.
MOBO power is connected.
case power button is connected. (I checked pins with my Z97 manual and its right one)


I replaced motherboard with second MSI Z97. Nope. Changed back to original one.
I replaced RAM with Corsair 4gb one. Nope. Changed back to original one.
I tried PSU on other system. Worked perfect. Tried new PSU. Same result.
I tried second G3258, same result. I changed it back to original one.

I tried shorting motherboard. No.
I tried using reset button as power button. No.
I took CMOS battery out and waited for 30 minutes then put back in. No.
I removed CPU 8-pin extension from StarTech and tried. No.

For zillionth time, the PSU is on. (the switch in the back) and is set to correct volt (red switch) I checked multiple time. I even changed power cable to the outlet and used known working one. Not working. Fan isn't running when I start. No beep from motherboard.

I even put GTX 770 back and tried it. Nope. Rest of attempts you see above was without video card.

Clearly it's relationship between CPU + RAM + MOBO

But I replaced one then put it back then next one.

Yet my motherboard won't start. No light. No fan starting. No beep. No sign of life. (brand-new out of box Z97 does same thing)
7 answers Last reply
More about msi z97 mate turn beep psu good
  1. "PSU is good" is perhaps an overstatement. I've seen no credible, positive reviews of that power unit anywhere. The fact that it has a voltage switch on the back already tells you a lot about it's internal component quality.

    However, take the motherboard out of your case - put it on a cardboard box (the box it come in. Remove all components from the motherboard. Then connect just the PSU. If you get no lights on the PSU, and since you say the PSU is "known functional", then the mobo has an issue.

    If that works, add a fan to the configuration, see if that works.

    Next add a stick of RAM.

    Next connect the CPU_fan (cooler) and make sure it spins up

    Then mount the CPU and cooler and check it again.

    If it works up to here, then you probably have a short in mounting the mobo to your case.
  2. Karsten75 said:
    "PSU is good" is perhaps an overstatement. I've seen no credible, positive reviews of that power unit anywhere. The fact that it has a voltage switch on the back already tells you a lot about it's internal component quality.

    However, take the motherboard out of your case - put it on a cardboard box (the box it come in. Remove all components from the motherboard. Then connect just the PSU. If you get no lights on the PSU, and since you say the PSU is "known functional", then the mobo has an issue.
    If that works, add a fan to the configuration, see if that works.

    Next add a stick of RAM.

    Next connect the CPU_fan (cooler) and make sure it spins up

    Then mount the CPU and cooler and check it again.

    If it works up to here, then you probably have a short in mounting the mobo to your case.



    Yes I am aware. PSU is obviously not made by a good brand (Corsair, Cooler Master, etc) but by 'good' I mean that it is working. My PSU have no light. Nor do my motherboard (expect for tiny led in ethernet port.)

    I tested power-supply on older Core 2 Duo system with GTX 650 Ti and everything work. My fan on power supply works.

    If motherboard is the issue, why does the problem persist when I have second motherboard (Z97 of same make and model) that works the exactly the same.

    CPU and RAM seems like it is not a problem. I replaced both and still not working.
  3. If it was working before it could just be the on switch on the case. Try jumping out the pins on the motherboard instead of using the switch.
  4. Zerk2012 said:
    If it was working before it could just be the on switch on the case. Try jumping out the pins on the motherboard instead of using the switch.


    It was working before yes. I shutdown the computer and GPU out and then it wasn't turning on out of blue.

    I switched CPU and RESET button. It is not working still. I also shorted the motherboard pin to simulate 'ON' switch. Nope.
  5. And you did state you put the PSU in another PC and it worked?
  6. No after reading again all you did was replace the power cord.
    Do this I think your door stop has died.
    https://www.youtube.com/watch?v=khpnx21oydg
  7. I finally found out. It was the Z97 motherboard. It's dead. (second one I swapped with had bent pins out of the box and I did not notice)

    Sending my Z97 back to MSI and see what happen. :P

    ( i can't pick myself as a solution :sarcastic: )

    p.s. I also got a better (not the best) power supply.
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