Error launching IDEA if you already have a 64-bit JDK installed,define a JAVA_HOME variable in Computer > System Properties > System Settings > Environment Variables 

Failed to create JVM.JVM Path:D:\Program Files\IntelliJ IDEA 2019.3\jbr\

解决方式:

删除用户目录C:\Users\admin\.IntelliJIdea2019.3\config  下的 vmoptions文件