I have tried both S1 and S3 ACPI in the bios but no change.
However It does get interesting now...
When "Speedfan" boots up the CPU activity goes to normal - just as it talks to ACPI for temperatures.
It seems that ACPI.sys is trying to talk to something (I suspect Mobo) and is failing but keeps on trying all the same. When "Speedfan" boots up it interupts the cycle and all is well - while Speedfan remains in memory!
A quickfix until the real culprit is determined is to put "Speedfan" in the startup menu to interupt the cycle on windows bootup and leave it there.
I have also tried removing the GFX, Audio and DVD with no change - I will check out the SATA drivers tho just in case.
Power setup also has no effect - everything set to "never"
we are getting closer..:-))
Thanks for all your time so far!!