I recently bought a avr programmer. Like $3 and coming from China. I just tested it and connected the pins to arduino. Everything worked out fine, I was able to burn the boot loader and upload sketches using the programmer. After my successful tests I burned the boot loader one last time and it still worked. Then I tried to connect my uno to my computer with the serial connection and booom... My computer recognized the uno and the com port was shown as it should but as soon as I started to upload a sketch it took 2minutes and I ended up getting an error. What is the problem?
Thank you guys! Louis