Post karbon a9 plus

help plzzz ....i rooted my karbon a9 plus android phone it worked well....and another day i tried to flash ROM...for this i used universal android AIO flasher software in PC...i installed adb driver....i enabled fastboot mode in mobile by pressing volume up button and power button and i connect USb cable to PC...i opened AIO flasher and load boot file of ROM.....i clicked on boot on the software and pressed takes so long stucks on saying i removed the USB cable..and draw battery of mobile...then after when i switched the stucks on welcome screen and now my PC doesnt detect it.....but i can switched it into fastboot mode ..i cant do anything other than it bricked?? how to solve it///