500 internal server error

Question

I am facing 500.0 Internal server quite frequently with my website.

The error details are given below.

HTTP Error 500.0 - Internal Server Error
C:\PHP\php-cgi.exe - The FastCGI process exceeded configured activity timeout

Module  FastCgiModule
Notification    ExecuteRequestHandler
Handler PHP_via_FastCGI
Error Code  0x80070102
Requested URL   http://mydomain.com:80/index.php
Physical Path   C:\HostingSpaces\coderefl\mydomain.com\wwwroot\index.php
Logon Method    Anonymous
Logon User  Anonymous

When I contacted the support team, they're saying that my site is making heavy SQL Queries. I am not sure how to debug this. But my site is very small and the database is optimized. I'm running wordpress as platform. How to resolve this issue.