500 Server Error

Hi, im using wordpress 3.5 My site was working fine today until i updated a few plugins among them “BETTER WP SECURITY”. After updating these plugins my site went down and it’s showing the error message 500. I have been trying the config file and others with a files backup i have on my computer but it doesn’t fix anything. Please help me!

[No bumping – especially after just 1 hour. If it’s that urgent, consider hiring someone.]