No Dashboard Access

Hi,

I have a WordPress website on my localhost, and everything worked fine, except for when then site loaded the frame work would load but the middle content displayed a 404 Error message.

I was suggested to go to my Dashboard > Settings > General and refer to the URL and WordPress directory file. I changed this to the home pages URL, and since then the whole site went haywire and I can’t access my Dashboard at all. It keeps on redirecting me to what is now I messed up homepage.

Is there a secific file that I can change in Dreamweaver to get access to my Dashboard again?

Thanks,
Rohan