Check Java Development Kit
1.1 Click Start
1.2 Select All apps
1.3 Select Java
1.4 Click About Java
1.5 The Java version is listed
If Java is not available or version lower than 1.8, please download Java SE Development Kit, otherwise ignore follows.
1.6 Download the package per your system, check agreement as red before download.
1.7 Double click the .exe file what you downloaded.
1.8 Follow the setup wizard to install JDK.
Download Android Studio
Android Studio
Click DOWNLOAD ANDROID STDIO 2.1 as photo.
Agreement
3.1 Check I have read and agree with the above terms and conditions as step 1 in photo.
3.2 Click DOWNLOAD ANDROID STUDIO 2.1 FOR WINDOWS (1262 MB) as step 2 in photo.
Install
4.1 Launch the .exe file what you downloaded.
4.2 Follow the setup wizard to install Android Studio.