Emulator: emulator: ERROR: x86 emulation currently requires hardware acceleration! Emulator: Process finished with exit code 1
An easier solution that worked for me (windows 10, Android Studio 3.1.4), just reinstall the HAXM installer:
1. Open SDK Manager > SDK Tools
2. Uncheck Intel x86 Emulator Accelerator (HAXM Installer) -> Click Apply
3. Check Again
4. After the installation process, you should be able to launch the emulator.