Do a "cat /var/log/Xorg.0.log | less
and see what error messages X is generating when it tries to start.
Then fix those problems or, if you don't understand how to do so, post the log file here and ask for the help you need.
As a general rule, you should always review your log messages before posting, and post the log(s) when asking a question. This helps people understand your problem in detail and, if possible, answer your question(s).
From your post, it's not clear if you actually even have a problem with X. It could be as simple as having changed your default boot option (click on the "Menu
" option on your login screen) to a session type of "Failsafe," or somehow getting a "3
" into your GRUB boot option line. But without the details, it's really
hard to offer much help.
By the way, the "Midnight Commander" package (yum install mc
) contains a nice set of terminal-based tools for finding files, viewing them, and, as needed, editing them. It can alleviate a lot of the pain of correcting problems when you're forced into terminal mode.