Random BSOD, can't diagnose the problem

[Thrust13]

Hello everyone,

I'll write this in a rush because I don't know when my PC will crash again.

Long story short, I have been getting a ton of BSODs with various messages and I have no clue how to diagnose the problem.
I kindly ask you to help me out on this one.

System : Dual core 2,4 GHz, 4 GB Ram DDR2, GEFORCE 9500GT/ATI RADEON 3450HD.

I am running a Windows 7 64 bit copy.

I am getting:
-random BSOD, can't read it, the PC restarts instantly.
-irql driver not less than equal
-page fault in nonpaged area
-UPDATED: system service exception

Errors happen when I boot the system, when I shut in down or plain out of nowhere, 2 mins after I started Windows or sometimes 2 hours after starting.

I have tried reinstalling windows - not working (duuh)
I have tried replacing my 9500gt with my old 3450 hd - not working
I have tried using only one of the two 2GB rams to see if one was corrupt + memory tests - not working
Dskchk has reported and fixed some errors on my hard drive - did not get rid of the blue screen

Here are some minidump files, the most recent since I reinstalled my OS. I don't know how to read them. Can you help me diagnose the problem please?

Thank you for your time.

UPDATE : A new dump file for then new BSOD is up.

 

[SpikeyBoiCahir]

i know your pain man. im half way through checking up whats wrong with mine.. here read my post maybe you should do the same. https://www.techspot.com/vb/topic155190.html#post948012

regards maciek

 

[Thrust13]

Ok, I just got to the conclusion that it's either the processor or the motherboard. Is there a way to determine which without actually replacing one of them in my system?