Appreciate the help chaps…feedback as follows:
CPU and power supply fans both spin under own power when pc is on, quiet as well.
How about the processor heatsink is loose – lift off, check there’s some of that jizz still there and replace nice and snugly
Now thats an interesting one. In order to clean out the big CPU fan I had to remove a plastic shroud that goes around the heat sink and the two items came away together, exposing the CPU chip covered in a thin layer of ‘gunk’. Once all dust cleaned out, I put it all back together and the heat sink is firmly in place…but could it require some more of said gunk to make sure heat is tranferred from CPU, if so what is it and where from?