Tongiht I had a small panic attack... I did some research and I found the solution for the Blackberry White Screen of Death... at least, it worked on my phone... if it happens to you, give it a try. It might work for you too...
The problem comes from the SD card (for my it was that)
- make a hard reboot (holding ALT + right SHIFT + DEL)
- once the red light off
- open the SD card slot and remove the card
- the system autoboot and the white screen desepears
- Welcome back to the world ...
ps: This happened to me offen when the weather is hot, or when the BBB stays under heavy sun a few minutes
Thanks to "spegase" from crackberry.com