Blynk not connected : gives DSR off

i have uploaded the required sketch on my arduino of connecting blynk over usb from the website. I have attached the right port , correct baud rate everything and run through command prompt as a administrator. But i cant control it. I have already seen many threads regarding this issue but still it is not solved. I get this on command prompt:
Inout start()
DSR is off
and then nothing.