Arduino Mega 2560 cant be read by pc anymore :S

Hello there i have Arduino Mega 2560

i guess i damaged it through short circuit or something through the serial thingy connected to pc

but they controller is working as code was last uploaded to it is working normally

if i connect to pc it doesnot appear in devices nor i can upload any code to it it doesnot make the sound it is connected

the power is arriving put any thing serial related isnot working :S

is there any way to write to my mega as i need it urgently

is there any way to fix it :S

PLEAAAAAAAAASE HELP ME ASAP :(:frowning: