As the user above stated try to format and reinstall windows another thing you could do its tap F8 KEY AS SOON AS YOU TURN IT ON AND CHOOSE LAST KNOWN CONFIG OR SAFE MODE SEE IF IT BOOTS,
As the user above stated try to format and reinstall windows another thing you could do its tap F8 KEY AS SOON AS YOU TURN IT ON AND CHOOSE LAST KNOWN CONFIG OR SAFE MODE SEE IF IT BOOTS,