Unhappy [Q] Custom rome help

I tried to install CM 11 Rom for my sony xperia L

Unlock boot loader and flash the boot.img file using flash tool...but after flashed the boot.img could not go to the recovery mode for flash to zip file.
Most of time I trying to power on the phone but it did not appears any signal or LED indication only one vibtation came and phone went to silent

now I could not connect flashmode for flash the stock rom

what is am I going to do correct my problem pls help me