|"What do you mean by that? The 24-pin main ATX plug & the 4-pin ATX12V plug?"|
"Could I have added the pcie-type one to the mobo wrong?"
What I mean by PCIE type plug is that it's similar to the one which plugs into the graphics card - I didn't know what it was called (4-pin ATX).
"Once again, not sure what you're trying to say. There is only ONE PSU fan.."
I mean the CPU fan and the PSU fan. Both are running and there's still a lot of heat inside the case. When I leave the side of the case on it gets physically hot at the back.
EDITED: My PSU seems to have a 24pin connector and a 4pin connector for the mobo. I tried leaving out the 4-pin and it wouldn't turn on, so I plugged it back in. Was this the right thing to do? Do I need both. Also, it definitely seems to be 24-pin as it took up the entire slot, I had a 20-ping before which only went in the centre of the slot on the mobo. Hope this is clear.