You said blue screen? Weird, I only know of the red screen which is due to the incorrect flash0 files or due to corrupted flash0 files.
I can only think of a few things here:
Battery might need to be charge.
Hold different button combination with L/R to see if something pops up.
Remake your MMS with the latest upgrade (XGEN might be the latest) or all else fails use DC8.
Hope this solves the mystery...
*Edit: I remember the blue screen now

It's part of the final update when upgrading firmwares and I think the final installer. No doubt about it, its bricked and hopefully without any hardware malfunctions.