Hi @ekiemody,
When you try and visit the login page do any relevant entries appear in your Apache or PHP error log files?
Looking at the source code of https://ruslp.org, the code suddenly stops when it calls for your company logo:
<img src="/scp/logo.php?
Did you upload your own company logo around the time that your installation crashed? Is there something funky about your logo?
Check /osta/uploads/. If you did upload your own company logo, make sure it’s there. If it’s missing, try placing it there manually. If it is there, try removing it temporarily to see if the page loads without it.
Try those things and let me know what you find out.