What make and model is your machine?
Are you comfortable with opening up the case?
Do you have your windows disk?
Let us know
Sorry I thought you were on a PC.
In that case could you topen your machine and Press the PMU reset switch (S1) once on the logic board. Do not press the PMU reset switch a second time because it could stop the PMU chip from responding.
Then wait ten seconds before connecting the power cord and turning the computer on so you can see if it responds better/
Let me know what happens.