I had a lollipop rom Nexus 7(2012), and I wanted to change it to Android Kitkat, as a personal like for it. I did as told in Google Developers page for Android Firmware for Nexus devices. When the process was halfway through, suddenly my computer shut down due to power failure(UPS Problem). And I cannot get it to go into fastboot, bootloader, recovery, download mode or whatever mode it is. Even charging symbol does not appear when I plug it in.
Does this have any way to un-brick it? If not by software, should we change the hardware like motherboard so that it could be fixed?