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Operating System not found

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#1 Judonems


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Posted 23 April 2018 - 02:20 AM

I am preparing my desktop pc for sale and was just trying to do a clean instal of Windows to get rid of my file history . 

I have just tried to re-instal windows 10 from a USB thumb drive but come up with a message "Operating system wasnt found. Try disconnecting any drives that dont contain an operating system"

I am able to get to the BIOS by pressing F2 but not sure what to do next

The PC was working well before I tried this

Thanks in advance

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#2 Kilroy


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Posted 23 April 2018 - 02:31 PM

Try changing the boot to UEFI instead of legacy.  If you deleted all of the partitions on the drive and let the Windows 10 installer prepare the drive it will default to UEFI which won't boot if your system is set for legacy boot.  Here is a Microsoft page explaining about legacy and UEFI booting.

#3 Judonems

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Posted 24 April 2018 - 03:21 AM



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