am using Windows 8.1
Only using the USB cable for powering and downloading the Arduino Uno.
The green LED is on and steady. The yellow LED is blinking.
I go to Device Manager. Arduino is listed as unknown Device. Driver not installed Code 28
(Location Port_#0003. Hub_#0003)
I click on Update Driver (Browse from my computer)
Give location: c:\Program Files (x86)\Arduino\drivers
It reads: Installing driver software. The green bar shows loading.
Message appears:
Windows encountered a problem installing the driver software for your device.
Windows found driver software for your device but encountered an error while attempting to install it.
Arduino Uno
A problem was encountered while attempting to add driver to the software store.
I run Arduino 1.0.5 software (also tried Arduino 1.0.4, still does not work)
I select tools - Board - and select Arduino Uno
In tools menu, Serial Port is dim (not selectable)
I go to File/Examples/01.Basic/Blink and click upload.
It says Compiling Sketch
Then message appears:
Serial Port COM1 not found.
Did you select the right one from the Tools menu?
I want to select COM3, but the Serial Port option is not selectable.
Please help.