My operating system was deleted while using CCleaner

[Windows Central Question]

The other day I was using CCleaner for windows 10. I was wiping free disk space on the application. The cord to my computer accidently got unplugged and the power turned off. When I tried to turn on the computer on again, the computer said that I'm missing my operating system. How can I get my operating system back?? And all my files...

 

[Chintan Gohel]

The other day I was using CCleaner for windows 10. I was wiping free disk space on the application. The cord to my computer accidently got unplugged and the power turned off. When I tried to turn on the computer on again, the computer said that I'm missing my operating system. How can I get my operating system back?? And all my files...

this might help: How to do a clean installation of Windows 10 | Windows Central

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[Chintan Gohel]

Additionally, can you remove your hard disk? If yes, you can use it as an external hard drive and copy the data to another storage drive so you can have a backup