my sight not working

[srikanth24]

when I open the url www.thandras.x10.mx/magento its not working

[Gouri]

when I open the url www.thandras.x10.mx/magento its not working

It is giving Internal server error.

Please check the file permissions.

For the files 644 and for the folders 755 should be there

Giving 666 or 777 may lead to Internal server error.