Help: x10 mini pro dont turn up

Hi there,
this is my 1st post so i hope to be a lucky one...

I installed minicm7 on my phone and everything was ok untill the 1st reboot.
Phone asked me for " Sim unlock network code " or something like that
so i restored my backup and started to use utilities
to unlock bootloader and other staff...
I was so " busy " that i didnt notice that my battery is out of battery
and my phone powered off in the middle of the process.

I cant turn it on now, i cant charge it, pc dont recognise it ( pc companion to ) and power button + menu, or back button etc dont work...

I charged my battery in a phone store, hoping that i could do something
but my phone is dead... it dosent response and i m afraid tha i damaged it.

Any idea / advice ?

ps. Sorry for my english, i hope that i made myself clear enough
ps2. I read similar threads but they didnt helped me at all

I havent managed to turn it on yet...
Any help plz ?

ps. If i send it at sony-ericcson store
will they charge me or warranty applies ?

Isnt there anything at all tha i could do
before i send it for service ?

ok, thanx
i ll send it when i ll get paid...
unfortunatelly i ll have to wait for 1 more week