这是怎么回事，加速器已下载和选用？

Starting emulator for AVD 'Android4.2'
emulator: Failed to open the HAX device!
HAX is not working and emulator runs in emulation mode
emulator: Open HAX device failed
creating window 0 0 320 480

http://blog.csdn.net/yangsen251024/article/details/42393845