Inspiron 1521 loading screen shutting down

Hello, my roommate has been having problems with her Dell Inspiron 1521. She just recently had it fixed by Dell about a month ago. The other day she was working on a project in Photoshop and her computer shut down. She tried to start it up again but it stayed stuck on the dell loading screen. We tried entering the BIOS but the computer didn't respond. After awhile it shut down. Any suggestions to what we can do? Sending it to back to Dell seems to be the best option right now, but every time she gets it back another problem occurs....