PC loses power and restarts

[Gfkk40]

Hi all,
I've looked all over the internet and found many topics similar to the problem I am having. I have tried many different solutions posted but none have worked for me. My PC randomly loses power (like someone plugged it out of a power socket) and restarts after 2-3 seconds. I got it barely a month ago and it worked fine until yesterday (with no hardware changes being made and only software change was a windows update 2 days before problems started). I have checked temperatures and they all seem to be in order. The main thing is that it happens randomly. Sometimes it does this seconds after I press the power button, it happened during motherboard screen on boot, sometimes when it just logs into windows and sometimes it works for 2-8 hours and than it randomly loses power and restarts. It even restarted 6 times in the span of 20ish seconds once. It is on my table, there is no dust inside it and cooling does not seem to be the issue.

My specs are:
CPU -- Intel i7 6700 Quad-Core
Motherboard -- MSI H110M PRO-VD
RAM -- Crucial 16GB Kit (8GBx2) DDR4 2133 MT/s
Graphics -- Nvidia Geforce GTX1070 8GB Gainward
Storage -- 1TB Toshiba HDD, 256GB Intenso SSD (Main drive with Windows 10 Pro)
Power Supply -- 530 Watt Thermaltake 80+Bronze
Case -- Design Midi Tower Sharkoon VG4 Black USB3.0
Optical Drive -- LG 24x DVDRW SATA

I tried disconnecting my ram(switching my sticks), disconnecting HDD and SSD (it happened even when my SSD was disconnected so I ruled out any Windows problems), checking if all connections were properly plugged inside, checking temperatures (which all seem to be perfectly fine). I do not have a spare PSU nearby so I couldn't check if it was the source of my problems (even though my current PSU is brand new and worked fo a month). I also did not find any special action that can trigger it (it is the same whether my PC has been off for the whole night, just sitting idle on desktop or if it has been under heavy load when playing games). My settings are set to not restart itself automatically, however, it still just loses power like I pressed the power button and I have yet to encounter a BSOD.

As a side note, I encountered the problem a few days ago where my PC would not boot and it kept telling me to insert bootable device even though it recognized my SSD in BIOS which seemed to fix itself after 2 reboots so I doubt that it has anything to do with it, but it can't do any harm to put it here.

I appreciate any and all help that you can provide. Thank you in advance.

 

[grimakis]

Could be a short on the bottom of the motherboard, or across the reset pins?

 

[Gfkk40]

Could be a short on the bottom of the motherboard, or across the reset pins?

Could you please clarify a bit more what do you mean by this? All worked fine for a month so do not think that shorting should be a problem, but i am not that tech-savvy and would benefit if you could provide a more in detail explanation. Thank you for answer, I'll try to look into it a bit more.

Could 2 JFP1 pins being bent a little (I did not put them in myself, but it looks like it was made to make a bit more space for the other connectors or it could be that they are bent by design) cause this problem?

Edit: Pins seem to be bent by design to more easily distinguish them for led, power up and reset buttons on the front. Is there any way to check if they are causing shorts by not being plugged in correctly (as in being plugged in just half way)?

Edit2: Disconnecting all the JFP1 pins and reconnecting them again seems to have solved the problem for now. PC has been running for a while now with no restarts. I'll keep it running for a few hours to test if it stays this way.

Edit3: PC still restarts at the random intervals.

 

[grimakis]

Could be a short on the bottom of the motherboard, or across the reset pins?

Could you please clarify a bit more what do you mean by this? All worked fine for a month so do not think that shorting should be a problem, but i am not that tech-savvy and would benefit if you could provide a more in detail explanation. Thank you for answer, I'll try to look into it a bit more.

Could 2 JFP1 pins being bent a little (I did not put them in myself, but it looks like it was made to make a bit more space for the other connectors or it could be that they are bent by design) cause this problem?

Edit: Pins seem to be bent by design to more easily distinguish them for led, power up and reset buttons on the front. Is there any way to check if they are causing shorts by not being plugged in correctly (as in being plugged in just half way)?

Edit2: Disconnecting all the JFP1 pins and reconnecting them again seems to have solved the problem for now. PC has been running for a while now with no restarts. I'll keep it running for a few hours to test if it stays this way.

Edit3: PC still restarts at the random intervals.

What I mean is, when you install a motherboard, you are supported to use these standoffs that prevent the motherboards bottom from touching the case. If the bottom of the MoBo is touching the case, it might be shorting out.

Did you make sure to use the included standoffs during the installation?

 

[farmerking]

Likely a faculty power supply

 

[Gfkk40]

Could be a short on the bottom of the motherboard, or across the reset pins?

Could you please clarify a bit more what do you mean by this? All worked fine for a month so do not think that shorting should be a problem, but i am not that tech-savvy and would benefit if you could provide a more in detail explanation. Thank you for answer, I'll try to look into it a bit more.

Could 2 JFP1 pins being bent a little (I did not put them in myself, but it looks like it was made to make a bit more space for the other connectors or it could be that they are bent by design) cause this problem?

Edit: Pins seem to be bent by design to more easily distinguish them for led, power up and reset buttons on the front. Is there any way to check if they are causing shorts by not being plugged in correctly (as in being plugged in just half way)?

Edit2: Disconnecting all the JFP1 pins and reconnecting them again seems to have solved the problem for now. PC has been running for a while now with no restarts. I'll keep it running for a few hours to test if it stays this way.

Edit3: PC still restarts at the random intervals.

What I mean is, when you install a motherboard, you are supported to use these standoffs that prevent the motherboards bottom from touching the case. If the bottom of the MoBo is touching the case, it might be shorting out.

Did you make sure to use the included standoffs during the installation?

I checked that and it sits nicely on standoffs and does not seems to be touching the case. However, top left corner of my backplate is not properly screwed in (the screw on the case is not screwed into the backplate) so my motherboard does not align 100% with the I/O shield making one of the 4 usb ports unusable. I cannot screw it in myself since the top of the screw is circular but it does not look like it causes the motherboard to touch anything.