Error while uploading code into Arduino

Hi guys!

I have these messages when uploading my code into the Arduino. Even when it's just a simple code to enable LED light. I have already reset it. But it doesn't work out at all.

Here are the messages i got:

Arduino: 1.8.10 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 1224 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xbc
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xbc

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Please help me. Sorry if my English is bad.

Thank you so much!

Correct com port selected?
What does Windows device manager say under the ports section when you connect the board?
When you power it up, do you get three flashes in quick succession on the L led?
Did it work before?
Cable plugged in firmly at both sides (board an PC)?

@ngocthien2181

Moved your topic to a more suitable section.

Could you take a few moments to Learn How To Use The Forum.
It will help you get the best out of the forum.

Bob.