Alienware X51 BSOD loop on boot; Need diagnostics help.

So this first started happening sometime last year, I gave up trying to fix it after a month straight trying to diagnose drivers and what not, for last couple of months its been sat on my desk unused, but now I wanted to try again.

It boots up fine to the Alien logo but doesn't go further than that, before i wiped the drive it wouldnt even boot to desktop, occasionally it might but never further than the select user screen. I'm running Win10 by the way.

What I've tried; Gut the whole system and run it on bare minimum (No GPU, One stick of Ram, take out disk drive etc) and still no luck. On occasion it may actually come up with a BSOD screen (Most of the time its IRQL NOT LESS OR EQUAL) so most of the time it just restarts no warning.

EPSA came back with no problems though I noticed my HDD taking a while to thorough scan, and the CPU temps were anything from 44c to 70c.

Can't boot to desktop, can't go into safemode, can't even get it to try install windows from a disk before bsoding. If it helps I was in the middle of a game when it started crashing, since then no luck getting anything else from it.