删除是一回事，通常有相对简单的方法来恢复它。

但是...这个词你使用是格式化的，这意味着完全不同的东西。具体来说，当您删除文件时，删除它们的分配链接并将其返回到未使用的数据集 - 数据保留在硬盘驱动器上，直到它占用的空间实际重用为止。

但是当你格式化磁盘，你刻意写入每个字节的数据来建立新格式，这意味着简单，廉价的方法几乎肯定不会起作用。



带磁性媒体，通常可以从格式化的驱动器中检索大量数据集（因为磁存储不是数字的 - 它是模拟的，这意味着你要覆盖的内容会影响你最终的1或0获得）。但是......对于一个严肃的专家来说，这是一项工作，而这将花费很多。可能很多。

尝试寻找数据恢复专家 - 你可能会在当地找到一些 - 并给他们打电话，看看他们说了什么。



更好的是，从上次备份恢复......

Deleting is one thing, there are normally relatively easy ways to recover that.
But ... the word you use is "formatted" and that means something totally different. Specifically, when you delete files, you remove the allocation links for them and return it to the unused data collection - the data remains on the hard drive until the space it occupied is actually reused.
But when you format a disk, you deliberately write over every byte of data to establish the new format, and that means that simple, cheap methods will almost certainly not work.

With magnetic media, it's often possible to retrieve a number of datasets from a formatted drive (because the magnetic storage isn't digital - it's analog, and that means that the content you are overwriting affects exactly what "1" or "0" you end up getting). But ... that is a job for a serious specialist, and that will cost. Probably a lot.
Try looking for data recovery specialists - you may find some locally - and give them a call and see what they say.

Better still, restore from your last backup ...

嗯，没有100％保修软件可以恢复以前格式化的数据。如果您有数据副本（OS系统），则可以尝试从该备份还原它们。如果没有，则只能还原Windows操作系统（全新安装）。戴尔提供了实现这一目标的方法。注意：您需要 Dell Servive Tag （在笔记本电脑的底部）。请参阅：戴尔Windows备份媒体和恢复选项|戴尔美国 [ ^ ]



BTW：我强烈建议更换维修技师和/或车间......

Well, there's no 100% warranty software which can restore previously formatted data. If you have a copy of data (OS system), you can try to restore them from that backup. If not, you can only restore Windows OS (clean installation). Dell provides a way to achieve that. Note: you'll need Dell Servive Tag (on the bottom of laptop). See: Dell Windows Backup Media and Recovery Options | Dell US[^]

BTW: i'd strongly recommend to change repair technicians and/or workshop...