
This post lists how to install ADB and fastboot from Android Studio 3.0.1 on Windows 7 Professional.
Steps
1. Launch the SDK manager
Click (1) Tools, (2) Android, (3) SDK Manager

2. Click (1) SDK Tools then (2) Android SDK Platform-Tools and click (3) Apply

adb.exe and fastboot.exe were installed at
Reference
The Android Robot logo came from link.