Yep the fan/s (have tried an exact same cooler unit) have four leads both genuine Intel.
Yep have tried the original CPU back in.
The BIOS only shows me CPU fan control [enabled] / fan control > [enabled] / Lowest fan Speed [Slow]
Processor zone 56C
Processor fan speed 2756rpm > original cooler unit
Processor zone 60C
Processor fan speed 2056rpm > other cooler unit
Now the thing boots and runs real quick for an older machine and there is no problem with running apps etc The only thing is that the CPU fan runs flat out and is kind of really noisy.
Am just wondering if I should reset the BIOS by jumping it or taking the battery out or just picking default settings.
Maybe I have two dud CPU's?