Changed a computer, moved the .gradle .android .AndroidStudioPreview3.0 and SDK, android studio program folders under the user folder of the AS that the original computer normally uses to the new computer after configuring the path, and found that after the AVD was opened White screen, nothing to see. Searched the internet for a solution
1. Reinstalling haxm has no effect; adjusting the large memory has no effect.
2. Disable the system sound card, no results, but inadvertently found that logcat can display the log, so I suspect that it may be a problem with the display settings
3. Open the AVD settings, change the graphics from Automatic to Software, the problem is solved, it turns out that the A card of my new computer was discriminated against, alas.