Try to specify full path to ChromeDriver executable with --chromedriver-executable Appium's command line argument.

Please find below 2 possible solutions that might help:

1) Re-download Appium using git, and initialize ChromeDriver from scratch:

git clone https://github.com/appium/appium.git
cd appium
reset.bat --android --chromedriver-version 2.9 --verbose

then launch Appium with node . from the same directory.

2) Or try to specify full path to ChromeDriver executable with --chromedriver-executable command line argument when launching Appium.

Try to copy ChromeDriver executable to the folder where Node.js is installed.

Try to specify full path to ChromeDriver executable with --chromedriver-executable Appium's command line argument.