推荐回答（2个）
长按是强制关机。
第一个是电脑正常运行时强制关机，长按电源键是电脑不正常运行时强制关机，相比而言后者对电脑的损伤更严重。
笔记本按一下电源键就关机设置：
在屏幕右下角的任务栏中点击电源按钮，再点击 “更多电源选项”。
点击弹出页面左边的“选择电源按钮的功能”。
在“按电源按钮时”之后的下拉菜单中选择关机，用电池和接通电源的情况根据自己需要选择。
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选好后单击页面右下角的“保存修改”。设定好之后就能实现一按电源键就关机了。
错！！ 电脑的运行是通过 0和1 来实现的 0 代表低电压 1 代表高电压 简单一点说 当你电脑在通电待机的情况下（插上电没开机），主板的南桥 。I/O 都在待机工作 那么 你摁下开机键后 会使主板上的开机排针（门电路短接）想触发 从而让南桥或I/O得到一个开机信号 N个0和1组成 表示电压的高低 速度 这些信号 就让所有该工作的原气件开始他们不同的工作 然后是关机 ：关机 有3种 第一 直接断电 这种方法很快 但是极度损坏电脑 尤其是硬盘 USB CPU 不推荐 第二 摁下开机键3秒左右关机 这种方法 简单方便 但是如果你正在做文件或者重要质料没保存 那么 你千万不要这样关 一关 你东西都没了 这种方法 是强制给主机板一个关机信号 导致电脑不管在什么情况下都会关机 这种叫冷关机 机器死机的时候可以考虑 呵呵 第三种方法是软关机 通过操作系统的内部软件程序 发送给主机板的 南桥 CPU 一个关机信号 关机 在一般情况下 请用第三种方法 呵呵 虽然要等个10来秒 但是这种是最安全的
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