In this Video we covered the situation arrived due to different Partition Scheme.
Many people face this problem due to lack of knowledge about Patition style or Partition Scheme.
Sometime changing boot mode can solve the problem from UEFI to Legacy or From Legacy to UEFI.
But this Is different one here hard drive is booted using GPT Partition style But converted to MBR. and During fresh windows installation It shows Error The Selected Disk Has an MBR Partition Table. And also not booting in Legacy Mode.
Then in This situation We have to convert Partition Style from MBR to GPT. This can Solve your Problem.