Troubleshooting Android Studio Installation Error on Windows 7: "No JDK Found"

Users attempting to install Android Studio on Windows 7 have encountered a common issue where the installation process fails with the error message "No JDK found." This error indicates that the installer cannot locate a valid Java Development Kit (JDK) on the system.

Resolving the "No JDK Found" Error

To resolve this issue, follow these steps:

1. Ensure JDK is Installed:

Make sure that you have a JDK installed on your system. The latest JDK can be downloaded from the Java website.

2. Set System Variables:

Create a new system environment variable named JDK_HOME and set its value to the installation directory of the JDK. For example:

JDK_HOME=c:\Program Files\Java\jdk1.7.0_21\

Make sure that you also set the JAVA_HOME variable with the same path.

3. Confirm Variable Setup:

Open a command prompt and run the following commands to verify that the environment variables are set correctly:

echo %JDK_HOME%
echo %JAVA_HOME%

If the commands return the correct values, the variables have been set properly.

4. Restart Android Studio:

Close and restart Android Studio. The error should now be resolved, and Android Studio should launch successfully.

Additional Tips:

• If the error persists, ensure that the JDK installation is complete and that the path to the JDK_HOME variable is correct.
• You can also check the Android Studio log files for more details about the error. The log files are typically located in the following directory: C:\Users\[username]\.AndroidStudio\[version]\system\log
• If you continue to experience issues, consider uninstalling and reinstalling Android Studio after setting the system variables.