Dead mobo cpu or PSU?

[Petox]

Hello for a week now i've been having some trouble with my pc and have 0 idea what's causing it 

I have to restart my pc 3-4 every times i start it up for the first time of the day it just keeps crashing on everything for example:
Press the power button no post just black screen,Restart
Power button get to bios logo screen then crash again,Restart
Power button to windows logo screen and then crash again restart and then after 5 restarts get to the desktop screen 
And then i can restart or close it for a min and re open it and have no crashes at all 

But even after i get through all this sometimes the computer just freezes randomly and nothing responds (keyboard mouse) all i can do is restart it 
It can happen anytime watching youtube gaming or downloading an update on Steam

I've also noticed that if i just leave it on for a while (5-10 mins) and restart on the first crash it goes to desktop screen with no crashes

Also weird thing i noticed is that my CPU is running on REALLY Low temperatures and my 12V and 5V rails are getting too much juice

and i have no idea why this happens i tried:
Clean install of windows twice and that didnt work
Cleared cmos 
Resetted bios setting to default
Updated bios to latest firmware 
Cleaned the inside of my pc 
Reseated every part of the computer (RAM GPU PSU cables)
Switched position for the sata cable for the HDD 
Downloaded Whocrashed but there are no minidump files created 
Deleted and reinstalled GPU drivers

dont know what else to do and the bad thing is that i dont have any spare parts cause i moved about 2 weeks ago for studies and left my spare parts at home 
i suspect it's either CPU PSU or Mobo but cant seem to figure out which one is there any way to fix this or identify the issue ?

PC SPEC and Periipherals
CPU:AMD FX 4100
GPU: Sapphire R7 260X 

Ram : 2x4GB Trascend
HDD: 1 7200 RPM Sata
PSU : Approx Lite B02 
Motherboard : MSI 970 Gaming
Keyboard: Logitech g105
Mouse :Roccat Kiro
Headset: Razer kraken 7.1 USB 

 

[Crunchy Dragon]

Have you entertained the possibility that your drive could be dying?

 

Other than suggesting that as a possibility, it could be your motherboard is faulty and reporting incorrect measurements for your CPU temps and Vcore voltage.

[Petox]

I did also do a chkdisk but no corrupt files were found is there any stress test to do to check the Hard drive?

[Spudbilly]

Sounds like motherboard to me based on the voltages you noticed etc. 

[faziten]

That volt reading is way off, it must be software reading error.

PSUs may fail over time, but voltage regulation is the last thing that would fail even on the most chineese of chineese, unbranded PSUs.

To be safe, id test the PSU with a voltimeter on its main Rails: 12, 5 and 3.3.

 

The kind of behavior you describe is an indication of bad caps rather than bad volt regulation, but it still leaves you with mobo or PSU question nonetheless.

My bet is PSU. Just statistically speaking, its far more common.

[Petox]

Ι went to check the voltages on the bios and you're right it's a software error but 2 other weird things happened today 

1) I tried to start my pc without any usb cables on(only the DVI cable for the monitor was on) and it crashed only once in post and after 1 restart i was in desktop screen but after i inserted 1 usb device ( i think it was either the keyboard or the mouse cant remember) it immediately crashed and had to restart again

2) When i went to check the voltages on the bios i pressed hardware monitor and when i pressed F12 to take a screenshot the pc crashed again 

Im getting close to believing my mobo is the cause of this , im gonna get my old g41mp26 lga 775 with q6600 and test the PSU there 

is there any reason to believe that there's something wrong with the Cpu ?

[Petox]

Hello again sorry for the spam , my pc crashed again and just to test if it will crash again i did an AIDA64 test and discovered that i have 1.45 volts on the CPU Vcore on stock speed (with no overclock and bios is on default settings) im pretty sure that's not supposed to be normal is there a chance too much voltage on the cpu is crashing the pc?

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