Hi guys, I read the troubleshooting guide and some posts on here but didn't find a cure for my problem.
Like the title says, the L LED is steady. Not blinking. When I try to upload a sketch the two LEDs under the L LED both come on for like a second then go back off.
I have the Uno connected and the computer is seeing the board. I click Serial Monitor when it's plugged in and it pops up. Then I unplug it and Serial Monitor will not popup.
I installed the FTDI virtual COM port driver before installing the Arduino driver because I thought that's why my sketches weren't uploading. Turns out I should have installed the driver first.
Before I installed anything, the L LED was working fine.
According to this post, I probably overwrote my FTDI USB COM port drivers...
http://forum.arduino.cc/index.php?topic=63236.0
Any help is appreciated.
Sadly i think your bootloader has probably been nuked.
The fact the the rx and tx leds are blinking would normally indicate that the computer is communicating with the board.
Try running the loop-back test found at the top of this subforum. If the board passes that then my suspicions are correct and you will need to reload the bootloader.
Board did not pass the loop-back test if I did it correctly. I didn't know what "data" to send while in Serial monitor so I just typed random words. It didn't echo.
The IDE software shows it's on COM3, just like it does in the Device Manager so I know there has to be some level of communication.
I'm not sure what to do next.
Sorry, did not notice that you had replied. The fact that you failed the loop-back test could indicate that your problem is caused by the onboard usb-serial device.
I really think you should try reloading the bootloader anyway. I have experienced instances in which the microcontroller caused the board to fail the loop-back even though it is being held in reset.
Ok I will reload the bootloader and see what happens.