MSI B85M Gaming PC wont turn off - is it MOBO or PSU?

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Mercburger

Reputable
Jun 19, 2015
6
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4,510
I’m having a problem with my brand newly built pc components are as follows:

MSI b85M Gaming
Intel I-5 4460
Power color Radeon r9 280
Crucial ballistix 8 GB (2x4)
Corsair 600 W power supply
NZST 210 Source case
WD Blue 1 TB
Windows 8.1
Problem that’s occurring is if the AC or anything in my house rumbles (think walking or bumping the desk that the pc is on) it turns on. It does not occur unless it is bumped. I have turned off all wakes on settings including disabling mouse and keyboard from waking the pc. I have flashed the bios to the latest versions and I have also checked to make sure my power button was not somehow stuck in there. I have checked the mobo and made sure that everything is connected as perfectly as possible and made sure that the bios settings are set to keep everything off (no wake on system failure or anything) I have also checked the powercfg lastwake option many times when it happens but the pc shows a history count of 0 and states no devices turn it off.

Does this sound like a mobo or a psu problem?

Thanks for the assistance!
 
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Mercburger

Reputable
Jun 19, 2015
6
0
4,510


Checked all 3 and made sure that everything would make sure that it would keep the pc off. From what i could tell the problem did not appear to be in the bios.
 
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spooky2th

spooky2th

Splendid
May 18, 2010
4,855
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The power settings are not in the bios. Is the power button set to power off? Are any of the sleep functions turned on, in the 3 power settings modes? If the comp goes to sleep in 5 mins which is the default, bumping the table or comp slightly will move the mouse and wake the comp. Personally, I turn off all the sleep and wake functions so that the comp won't be doing anything that I do not tell it to do. And I shut down the comp when I am not using it.
 
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Mercburger

Reputable
Jun 19, 2015
6
0
4,510


Definitely not a windows setting. I have literally gone through multiple times on the bios and on the OS power settings and power management and what the power buttons do and everything else that has to do with power options. Everything is turned off and i cant even wake my pc from sleep without pressing the power button. It will turn off and then if there is a bump in my house or the tower is bumped or the desk is bumped the PC turns right back on. It does this from a sleep state as well as a off state.
 
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