W850i wont turn on

Hi i tried to flash my sony ericcson w850i using XS++
and so when it started i left it on and went to bed
when i woke up i discovered my laptop was off due
to overheating.

My phone now wont turn on and im guessing it
didnt finish the flashing. I tried to do that *+#
but it did not get that menu thing.

I used my brothers battery as we have same
phone and its fully charged and tried *+#
still no luck and i dont know what to do.

And im out of warrenty please Help :(

Thanks in Advance