请教一下各位老师，电脑重启之后ANSYS不能用了

   我的电脑是WIN7系统，安装ANSYS10之后可以运行，但重启之后再运行就显示
Product:Ansys Multiphysics (feature 'ane3fl')
    Check out the failed for the above product.
    FLEXlm error message:
     The desire vendor daemon is down (-97,121)
Servers/license files searched:
        1055@Lenovo-PC
        C:\Program Files\Ansys Inc\Shared Files\Licensing\license.dat
{For additional licensing debug deatils,set the ANS_FLEXLM_DEBUG
envoiornment variable to '1'before running this product.For
maximum licensing degug details ,set this envoiornment variable to '2'.}