Xperia U not turning on

[#1]

Hello

My sony xperia u wont turn on, i've not done anything that could harm the phone.. I used the phone yesterday, and it went empty of battery so i left it on a table..

Now, when i've charged it for like 2 hours, the phone wont turn on again, what's wrong?

[Nine2]

Yes, I did boot. I could see finished on my computer after boot. but when I press power button again, my sony xperia u st25i could not start anything. How can I start it? Help me pls

Sony Xperia U ST25i

[connorholt_]

My xperia turns on displays the Sony and xperia logos as if it's starting up and then turns off and does the same again and you can't turn it off without taking the battery out. WHAT SHOULD I DO????????

[Dom19801]

my wife's has just done the same thing. could someone help me and this fella out. or are with best off getting a new phone from a different manufacturer. like LG, Apple   hope someone will help soon 

[_alexdon_]

is the force restart option working(power button+vol up until the phone vibrates)?

[ash217]

my xperia u was working fine yesterday i was on it and it crashed so i turned it off by taking the battery out it had 50% charge at this point and now it wont turn back on theres no poiwer at all when the charger isnt plugged in theres no response when i hold the power button but when the charger is plugged in a red light flashes once and thats it ive tried charging the battery via universal battery charger what should i do?

[_alexdon_]

Charge for 2 hours,repair with SUS:

http://www.sonymobile.com/gb/tools/update-service/

[JohnBodi]

HI guys ! i have a Sony Xperia U too and sudendly its not turning ON. it have battery and when i press the start button 

its shows SONY and after 2 seconds restard it self and again Sony. What can i do? 

[gregory80]

i aso have the same problem my xperia u nly shows the sony logo not startg up ( i was mountg data and suddenly it turnd off) help pls