Ubuntu Server Stuck at Login Prompt

My Ubuntu server is failing to boot properly. It's getting stuck at the login prompt, which is preventing me from accessing the system. I need an experienced Linux server specialist who can help me troubleshoot and resolve this issue.

Ideal Skills:
- Proficiency in Ubuntu Server
- Experience with server troubleshooting
- Knowledge of boot processes and login prompts
- Familiarity with Linux command line
- Problem-solving skills

Please provide your bid along with your relevant experience.