no need man thanks for the assistance.
I disassembled everything including my hdds and optical drives and started again, I realised when i first built my rig I did a number of things wrong such as having my psu fan facing upwards when its an induction fan and i have holes at the bottom of my case for ventilation, i also didnt use the riser pegs for each of the screws in my MB and instead had it screwed directly onto the backplate.
Then i worked a bit more on my cable management and it worked out nicely.
Im suprised it even lasted that long being flat against the back plate, something must've been touching what it shouldnt have.
I guess it goes to show how much i've learned from forums since I first built it haha.
Cheers for all the support though guys.