First G4 Cube almost complete.... except for loud GPU ground noise!

Hi guys,

Great forum, been reading up for a while, and a couple of months ago started by first ever PC mod build - a G4 Cube. Firstly, huge respect to everyone here who's made a successful build - I have discovered that its definitely not as easy as it might seem!

Here are my specs:

ASRock H97M-ITX/ac Motherboard [NOT recommended - other motherboards fit much better!]
https://www.amazon.co.uk/gp/product/B00KL7KY6M/?tag=tonymacx86-21

Intel Core i3 Processor 4130T...

First G4 Cube almost complete.... except for loud GPU ground noise!