无论是一只猫趴在键盘上，一个小孩敲打随机键，还是其他形式的键盘灾难，我们的键盘都会突然开始显示出奇怪和令人沮丧的行为。有鉴于此，今天的超级用户问答帖子为读者的笔记本电脑键盘危机提供了一些解决方案。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户阅读器user660920想知道为什么他的部分键盘输入了错误的字符：

My cat sat on my laptop and now if I type either L or P, it inputs 3 or an asterisk (*) instead, but the rest of my keyboard still works correctly. The problem is bad enough that I had to use my laptop’s touch screen keyboard to type this. How can I restore the correct default behavior of my keyboard?

为什么他的部分键盘输入了错误的字符？

答案

超级用户贡献者Aibobot、Rizal Pahlevi和plugwash为我们提供了答案。首先，Aibobot：

That is the standard “ten keyless” Number Lock key layout found on many computers.

To turn off the Number Lock on my Lenovo, it is Fn + F10, but the key combination may vary based on the manufacturer.

随后是Rizal Pahlevi：

You need to turn off Number Lock and it will work as expected again. On my ASUS laptop, the key combination is Fn + Insert.

plugwash的最终答案是：

If I recall correctly, on at least some laptops it shares more than just the name. If you plug in an external keyboard and press the Num Lock key on it, then the function of the keys on the laptop’s keyboard changes from regular letter keys to the “embedded number pad” keys.

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图片来源：Masaru Kamikura（Flickr）