non system disk or disk error after running mbr2gpt

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Can anybody help me with this one?
I’ve run the mbr2gpt and as far as i know it completed. After that when rebooting i get the mentioned error. I cant even boot from win10 USB. I’ve tried fixing boot order, cables, IBA, etc.
Could it be the case my bios doesn’t support UEFI therefore I can’t boot from the GPT disk?


Windows Performance Toolkit
Windows Performance Toolkit
A collection of Microsoft performance monitoring tools that produce in-depth performance profiles of Windows operating systems and applications.
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