Problem not starting

[parikshit]

my phone  is not starting .it continuous restarting . First it shows Sony then Xperia  and then again showing sony then xperia it continues  showing .it seems  it again  and again starting .what i do.My phone is not rooted.

[Trubo_XL]

Last known firmware version you knew?

[Trubo_XL]

You should check whether it's the SD or the SIM that makes bootloops...

Try removing either one of these to check the problem...

Regards,

Trubo