https://www.hi-pda.com/forum/viewthread.php?tid=2410231在上面的贴子中，我推荐过录屏软件 ocam
这是一款免费软件，可以从作者网站直接下载
http://ohsoft.net/eng/ocam/intro.php?cate=1002今天才发现以往装有ocam后，电脑无法睡眠关机，原来跟brtsvc有关
刚才又测试了电脑里的两个版本的ocam，发现最新版安装时，明确显示默认勾选了 安装 brtsvc，老版本安装时虽没有提醒安装brtsvc，但在用户协议中，发现最下方标有如下字样
[Supplementary Provisions]
oCam is running as a sponsored program.
Sponsored program
BRTSvc is a cryptocurrency miner and is a sponsor programthat utilizes system resources only when the PC is idle to minimize user inconvenience.
If the user is not comfortable with the sponsor program, delete BRTSvc from Add / Remove Programs in the Windows Control Panel.