How do I get my Android ZTE Score to turn on again without having to reboot it?

[yzabelle_delosreyes]

My phone was giving me that warning that said that the app crashed cos something was interrupting it. Therefore, I had the option to either send a report or stop the app, or something like that. It gave me that warning every time I opened an app like Instagram, Facebook, Twitter, or even the browser itself. So, I tried restarting my phone, but it just stops at the screen where muveMusic is loading and keeps doing it. I've already tried taking out the battery and the SD card. And it has done this before. The first time I did it, I had to reboot it, but I found out that it get's rid of all of my contacts, my apps, and my music playlists. Is there anyway I can turn my phone on again without having to reboot it? Right now, I'm leaving my phone off with the battery out. I was told that maybe it was over heating, so that's why it stopped.

Extra details: It's a criKet phone.

[thatoneguy]

Do a factory reset.

Power OFF the handset
While OFF; Simultaneously press and hold the Volume Down, Camera, and
the Power keys for 10 seconds.
When the Android icon is displayed touch the Menu sensor key .
Scroll with the Volume Down key to “wipe data/factory reset” and press the
camera button.
Scroll with Volume Down key to: “Yes -- delete all user data” and press the
camera button.
When Data wipe is completed the option “Reboot system now” is
highlighted, press the camera key to reboot the device.