Thanks chaps. Downloaded Speedfan and the first thing that stands out is CPU fan is 4560, but Fan 2 is 0.
Has this really got two fans, if so I guess the second one would be the graphics, but I can turn the screen off for a while and it makes no difference.
I'm sitting in piles of boxes with my tools . . . somewhere. Pity, this machine would have been a good stop-gap despite not being able to carry it far.
Mac, under clocking. I sort of am with Power-saver, but today that's not making much difference despite being in slightly cooler conditions. The BIOS seems to have very little to offer. VERY little. I can't find any hidden toolboxes to manipulate . . . anything much.
In haste