PROBLEMS UPLOADING!!!

I’m pretty new with arduino and I’m having trouble uploading the blink example. I have followed all the instructions, installed the drivers, checked all my connections and I get this…
avrdude: stk500_getsync(): not in sync: resp=0x00

thanks

Are you sure that your Arduino is on COM3?

Yes it's in COM3 made sure by going into device Manager... Dont know if this has to do with anything but as I plugged the cable to arduino the built in led for pin 13 stays lit