I think i've read all of Google. I see a few similar posts here, but none seem to apply.
I just received my first Arduino Mega boards yesterday. I installed Arduino environment 1.5.4r2. Connected the Arduino and all worked fine. I created my sketch, uploaded it maybe 15 or 20 times (minor tinkering) and all seemed good.
At my next time trying to upload, I got an error. I went to Tools, and Port was greyed out. In Device Manager, no Ports group is listed, nor is any Arduino device.
I unplugged the USB and reconnected. Windows did not acknowledge presence of a new device via the (beep-beep), but the device did power on.
I've tried everything i can think of:
- plug in different usb port
- reboot
- uninstall software, reboot, install software, connect arduino
- uninstall software, reboot, connect arduino
- uninstall software, power off machine (full unplug), install software, connect arduino
- use different (new in box) arduino
- uninstall software, reboot, install nightly build drivers, connect arduino
- disconnect arduino, disconnect all pins from arduino, connect arduino
Any ideas how I can make Windows recognize that this device is being inserted?
I know the USB is still good on my machine because I inserted a new USB thumb drive and windows did the "beep-beep", started searching for a new driver, installed the device, and I can use the thumb drive.