I have just recently taken over management of a website. I did not create the site and do not have experience like most of the people on the forums I am reading. I was trying to activate a new theme, and the screen went all white and stopped loading. Now, I can't login at all to revert to the old theme. The login page is just white with nowhere to enter my admin information.
I've seen other similar problems and people were advised to go in and delete some corrupted files...but I have no access to those files. I only log into the site through a web browser.
How do I fix this? How can I get access to the site? I'm running it off my laptop and have no servers or backups. Does the company hosting have that? I know until I took over a week or so ago they had done archival.