Try holding down the Volume down button and power button till the device displays a Android logo then select Delete Cache and the click the reset phone. NOT erase. Using the power key to select your option
Try this steps..
Master reset with hardware keys
A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloads, ringtones, images, apps, contacts, and Visual Voicemail. It does not delete data stored on the SIM card or SD card.
If the device menus are frozen or unresponsive, you can master reset using hardware keys.
Once it is on the home screen please dial this programming code to update the network connection.
Enter ##72786#. The device will show the hands free activation process and PRL update. The device will turn off twice and will turn by itself twice. Then the last update will be the firmware of the device. Then make a test call, send sms and try to browse on internet if your data will work.
I hope it helps..
-Boost Tech Support
Hi there MZTOMIKA. Sorry that this happened to you. This is caused by a corrupted boot loader. If you already performed the manual reset and still will not boot up, then you may need to send it to the manufacture if under warranty.