Solved

MSI z97 gaming 5 no pwr/response to pwr btn LETS FIX IT!

Hey guys,

I'm dealing with a z97 Gaming 5 motherboard that was running an I7 4790K on it, 8gb DDR3 Corsair Vengeance, TT 750w 80+ Bronze PSU, Corsair H100I V2 water cooler on it (pump plugged into CPUFAN1). and 2 front fans plugged into SYSFANs 2 and 3.

I was dealing with an issue of my H100I V2 pump going out on me. The CPU was running hot (got as high as 99C then I shut it down) so I took the pump and rad out of the PC, hooked up the stock cooler (plugged fan into CPUFAN1) to run the PC then booted the computer up into windows.

What I regret doing at this point was plugging the 3-pin pump connector from the H100i into CPUFAN2 while the computer was running. I was lining up the 3-pin connector to go into the 4-pin CPUFAN2 header and accidentally touched pins 1-2-3 of the pump connector with pins 2-3-4 of the mobo CPUFAN2 header. as soon as these pins touched, the pc shut off and all lights turned off.

I initially thought it may have been just an overcurrent shut down for the mobo, but when I go to press the power button, now I get nothing. No lights illuminate, no fans twitching/moving, no PSU fan movement, no power LED, nothing. 

This is where i'm currently at as I've still not gotten the mobo to power up.

Tests I've done so far:
(everything is disconnected, video card, all USBs, all fans, all SATA devices)
-tried a different PSU (TT 430W that works), plugged in 24 pin and 8-pin to motherboard only, no change to concern.
- tried powering on PC with both RAM sticks removed, 1 connected, the other connected, and 1 in each DIMM slot. no change to concern
- cleared CMOS by jumping the JBAT pins near the battery for 10 seconds, If I do this with PSU power. I get a solid blue LED near the JBAT jumpers that remains solid. I've also done it with the battery removed and PSU power removed. no change to concern.
- I've let the battery sit out of the mobo and no PSU power for an hour, no change to concern.
-I've taken the mobo out oft he case and sat it on my wooden desk, attached 24pin and 8-pin only. jumpered the power switch at the mobo, no change to lights on the mobo.
-
some weird stuff I've tried:
- tried to power on without the cpu/HS installed, no change
- held the power button down. after 5-7 seconds, the blue LED begins to flash, it'll continue to flash until I shut the PSU off.
- I've connected 24-pin and 8 pin to mobo, then jumped GRN/BLK at the PSU. the PSU powers on and PSU fans come on. when hooked up to the mobo, the red LEDs on the mobo illuminate, the DEBUG 2 digit lights do not illuminate, the CPU fan operates. Still no boot though.

So... I've submitted an RMA ticket for my 2 year old mobo and i'm debating on whether this is something MSI can fix or will require replacement (and if replacement, is my mobo EOL?)

any of you guys can think of a reason why the cpu fan connection mistake I made caused the motherboard to die like that? if its an overcurrent protection or if there is a circuit breaker anywhere on the mobo that may be active, is there a trick to reset it?

thanks to anyone that replies, i'll owe you a beer the next time your in northern Cali.
Reply to linkeds2
11 answers Last reply Best Answer
More about msi z97 gaming pwr response pwr btn lets fix
  1. YOu can hope it only shorted out the PSU...

    Once connecting a known good PSU, you are left with the mainboard wtih now-shorted circuitry that formerly regulated voltages to the header in question..

    We will hope a new PSU gets you up and running....
    Reply to mdd1963
  2. sounds like youve blown a fuse in the psu... do as the guy above suggested and try with a new psu/one thats working.
    Reply to BringerOfTea
  3. almost there buddy.

    you need to pull out the power cord while resetting the jumpers , than it will work.

    shut the pc down next time when connecting disconnecting stuff.
    Reply to superninja12
  4. mdd1963 said:
    YOu can hope it only shorted out the PSU...

    Once connecting a known good PSU, you are left with the mainboard wtih now-shorted circuitry that formerly regulated voltages to the header in question..

    We will hope a new PSU gets you up and running....


    BringerOfTea said:
    sounds like youve blown a fuse in the psu... do as the guy above suggested and try with a new psu/one thats working.


    Anonymous said:
    almost there buddy.

    you need to pull out the power cord while resetting the jumpers , than it will work.

    shut the pc down next time when connecting disconnecting stuff.


    Does ANYBODY ever read peoples posts here before replying?

    Quote:
    tried a different PSU (TT 430W that works), plugged in 24 pin and 8-pin to motherboard only, no change to concern.


    OP, I agree you may have fried your motherboard. Hopefully MSI can fix it. Probably blew a capacitor somewhere, look closely at them for a bulging one.
    Reply to Rogue Leader
  5. Hey guys. A different PSU was already tried per OP. I used a TT 430w psu that I've always had and worked. When hooking it up to this mobo the concern does not change.

    Ive looked closely at all the caps on the mobo and none of them look bulged. Is there a test with a DVOM I can do to determine if the cap still functions?
    Reply to linkeds2
  6. linkeds2 said:
    Hey guys. A different PSU was already tried per OP. I used a TT 430w psu that I've always had and worked. When hooking it up to this mobo the concern does not change.

    Ive looked closely at all the caps on the mobo and none of them look bulged. Is there a test with a DVOM I can do to determine if the cap still functions?


    You can do it following this site

    http://www.electricaltechnology.org/2013/06/how-to-check-capacitor-with-digital.html

    Not saying 100% thats the issue, but if the board won't power theres a chance.
    Reply to Rogue Leader
  7. Update:

    no visible failure of any caps on the mobo, i traced the circuitry on the mobo from CPUFAN2 to a cap and tested that with my Fluke meter set to resistance per Method 3 of the link.

    i get high MOhms that begin to decrease in resistance (better continuity). when it gets as low as 10-40 ohms, it jumps to a high KOhm resistance around 4,050 Ohms.

    The cap is a 560 uF 16v cap. tested it with another like cap on the mobo and they both behave the same.

    I haven't desoldered the caps and tested them on board but do you guys think i should remove the cap and bench test it?
    Reply to linkeds2
  8. If you have any prayer of warrantying the board this is a bad idea. Also sounds like thats not the problem, must be something else.
    Reply to Rogue Leader
  9. MSI only warranties for 1 year i've learned. so mine is out of warranty.

    I was just hoping that if i paid MSI to fix it , it would come out cheaper than buying another motherboard of similar quality (dont want to spend alot of money on old generation components)

    The big question is if they could fix it with something simple or would require replacement. That's why i didn't know if the mobo was EOL if it ever came to replacement
    Reply to linkeds2
  10. Best answer
    Being that 1150 is 2 generations behind, its likely EOL. They may have some refurbished stock they would provide you with. Depending what you can get a new one for it may be a similar price to fix it.
    Reply to Rogue Leader
  11. Thanks for the input rogue leader. I appreciate all the help.

    Weighing my options with the unknown cost and RMA hassle of repairing this mobo vs buying another of similar quality, I'll likely cut my losses on this one and get another mobo. I've seen an AsRock z97 extreme6 or Asus z97-A that haven't seemed to be affected by the price gougers

    Thanks again
    Reply to linkeds2
Ask a new question Answer

Read More

Gaming MSI-Microstar Motherboards