Please see:
http://www.soigeneris.com/Document/Installing_and_Configuring_the_SmoothStepper.pdf . Also, what to you mean by 'cleaned pc'? It is much better to start out with a fresh, NON-ACPI, Windows installation. Then follow the tips in the document above. Also, posting this in the SmoothStepper section of this forum might generate more responses.
Perhaps a moderator will move it to the SS section of the forum?