My Mac mini dosen't start up!

[shaulbarlev1]

My Mac Mini dosen't show the apple icon when I start it up. It shows a white, blank screen. It just stucks like that. 🙁
PLEASE HELP!!!!!!

If it helps, it has a Intel core 2 duo processor.

 

[GGJstudios]

Mac OS X: Gray screen appears during startup
Troubleshooting: My computer won't turn on

 

[Aameiel]

does it beep 3 times ?