PROBLEM SOLVED Thanks 
I recently cleaned my pc from dust and such including areas around the CPU cooler, this required me to remove the Heatsink, I took the CPU out of the socket after this and cleaned the paste off and reapplied to the cooler and CPU.
Now the problem since then I have been having issues, the PC wont post, I had a bad feeling that I had screwed up somewhere, checking all cables were attached, I checked the CPU removing it again.
The Motherboard Pins had been bent and I take it, that it was one of the essential pins.
I just need advice on what to do with this, whether I should attempt to fix it myself or whether a RMA would be a better plan, I did purchase it from OverclockersUK.
Specs:
Intel i5 760 @ Stock
Gigabyte P55A-UD4 LGA1156
----
MSI GTX 460 cyclone 1gb
4GB 1333mhz RAM OCZ Gold?
Thank you.

I recently cleaned my pc from dust and such including areas around the CPU cooler, this required me to remove the Heatsink, I took the CPU out of the socket after this and cleaned the paste off and reapplied to the cooler and CPU.
Now the problem since then I have been having issues, the PC wont post, I had a bad feeling that I had screwed up somewhere, checking all cables were attached, I checked the CPU removing it again.
The Motherboard Pins had been bent and I take it, that it was one of the essential pins.
I just need advice on what to do with this, whether I should attempt to fix it myself or whether a RMA would be a better plan, I did purchase it from OverclockersUK.
Specs:
Intel i5 760 @ Stock
Gigabyte P55A-UD4 LGA1156
----
MSI GTX 460 cyclone 1gb
4GB 1333mhz RAM OCZ Gold?
Thank you.
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