Share your experience!
My Xperia SP is currently on loop with the restart process.
SONY > black screen > XPERIA > black screen > animated light strokes > black screen > then back to SONY screen
Have tried already the hard reset, power button + volume down key, but it didn't work. Still looping.
Tried to fix through pc companion but still didn't fix the issue. My phone is still showing the looping process of the restart. 
Please advise what to do next.

hi, sorry to hear about your problem, I am afraid that using PC companion wont help in this matter anymore.
your options would be to send your device at your local service center Local support
or
you can try to flash a new firmware/rom, for more information you can go to forums like XDA
hi @nolramlb
thank you for your reply.
I'm not familiar with XDA?