flashing red light

[#1]

I was charging my phone while making a phone call. the phone then shut its self off. When i try to turn it back on the notifaction light just flashes red three times.

What can I do??

[gwhispererz]

See whether you are able to 'revive' phone by a Hardware reset. Press ON/OFF button together with the middle hard key (HOME), it should vibrate and start up.

[#3]

Your using Custom changes, this is your fault, not Sony.
http://forum.xda-developers.com/showthread.php?t=1034997

[AllenJie]

I having problem with my Xperia Z which totally cannot booted up now. I tried hard reboot it by pressing Home Button and Volume Up/Down but it still doesn't respond. I try to connect my Computer but it seems keep on disconnect and reconnect again and this cause SONY PC Companion unable to detect it.

Please help.