![6. Fix could not find USB device with vid=0x16c0 pid=0x5dc vendor='www.fischl.de' product='USBasp' - YouTube 6. Fix could not find USB device with vid=0x16c0 pid=0x5dc vendor='www.fischl.de' product='USBasp' - YouTube](https://i.ytimg.com/vi/tzekKRCbITQ/hqdefault.jpg)
6. Fix could not find USB device with vid=0x16c0 pid=0x5dc vendor='www.fischl.de' product='USBasp' - YouTube
![Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT](https://preview.redd.it/arduino-uno-not-working-arduino-avrdude-ser-open-cant-open-v0-jbkolknzb2j91.png?width=493&format=png&auto=webp&s=2e57fe14711ae79b123b0df8c8654f3473935fa0)
Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT
![Burning bootloader on ATMEGA8 could not find any USB device · Issue #102 · MCUdude/MiniCore · GitHub Burning bootloader on ATMEGA8 could not find any USB device · Issue #102 · MCUdude/MiniCore · GitHub](https://user-images.githubusercontent.com/22119363/61587059-3a3ae500-ab37-11e9-8478-317545a46e19.png)