Hi, since yesterday my Arduino micro can't connect to my computer, when I connect the cable it gets the power and runs the last sketch but there isn't anything in Device Manager. When I reset the arduino (Double pressing the reset button), computer detects it as "Arduino Micro bootloader (COM3)" and then after few seconds it disappears. I also have an Uno which works fine on COM6 port. I've tried updating the drivers(says its up to date), uninstalling it from Device Manager but nothing helped. Thank you in advcance.
Try resetting it, and during the few seconds it appears as COM3, select in the Tools, Port menu COM3. Then upload the blink sketch. Tap the reset button when the IDE changes from Compiling to Uploading.
Thanks for the help but during the reset it appears as "Arduino Micro bootloader (COM3)" in Device Manager and it doesn't appear in IDE at all.
If you are unable to upload the blink sketch to it by hitting the reset button at the beginning of upload, you will probably need to re-burn the bootloader onto it. The Micro and other Leonardo-type boards are difficult to upload the next sketch if the currently loaded sketch has a serious malfunction such as running out of memory.
Use the Burn Bootloader function of the IDE and an external ISP programmer device such as a USBasp, or use another working Arduino as ISP by loading the example ArduinoISP sketch onto it.
So I can use my arduino Uno to burn the bootloader onto my Micro? I have only seen examples where people are using two same boards. Thanks for the help!
If you run the Arduino 1.6.8 IDE try to up- or downgrade your IDE. I had a similar problem with a Mega up;grade to 1.6.9 solved mine problem
Sikko TAHNK YOU VERY MUCH it worked! :))
Wow, I was off base with my recommendations. I think I will avoid 1.6.8.