计算机屏幕开始飘雪花，时间越长屏幕边缘雪花积累越多。需要用任务管理器关闭。关闭后刷新桌面就可以清除雪花。-The computer screen began to snow flower, the longer the more snow accumulation at the edge of the screen. Need to use the Task Manager to close. Closure refresh the desktop can clear the snow.