Spoon take 30 minute to start pentaho

Hi,

I am using Pentaho PDI 4.2.1
With Windows 7 32 bit and Java1.6.When I restart my PC and open spoon .bat file then it will take 30 minute to start Pentaho.

Can anybody know why it take so much time.

or is there any solution for this.

Regards,
Rushikesh