avrdude: stk500_recv(): programmer is not responding

I got my Genuino UNO today and did everything exactly as told in the instructions to set it up.

When I try to upload the Blink sketch, for some reason I don't understand I get the following error message:

Arduino: 1.6.9 (Windows 10), Board: "Arduino/Genuino Uno"

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x2b
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x2b

As you can see, I use IDE version 1.6.9 on Windows 10. I did the loop-back test and my Genuino passed it with no problems whatsoever.

Since I'm a total beginner, I don't know what else I could try. Any suggestion would be much appreciated.

Thanks in advance!

Looks like it may not have a bootloader installed. Do you have a 2nd working Arduino that you can use as a Programmer?

Nope, I only have this one. Got it today from Amazon. It is my first Genuino ever. Is there anything else I can do besides getting a second Genuino? Should I return this one with a complaint?