How to turn on / de-brick a ZTE Blade phone?

Recently (mostly today) I have been experiencing quite a lot of “this app has suddenly stopped working” and so on all of them I pressed “force close” suddenly when I was going into my Gmail app and the same thing about the application stopping to work happened so I forced close. And my phone just switch itself off. Now it’s just blinking the ADROID sign after then green android sign. It’s all that’s happening and it doesn’t go any further.

For the past 2 hours I have been removing the battery and putting in back in, connecting the Usb on and off. The phone turns on and all that but suddenly freezes and the ADROID word is the only thing blinking on the screen.

Do you have any tips of how I could reset this problem other than taking it back where I bought it.

And also I just recently bought the phone… I would say that I have had it for about 2 months or so.