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Pavilion DM4 wont upgrade to Windows 10 1903.

Pavilion dm4
Microsoft Windows 10 (64-bit)

When trying to upgrade to Windows 10 1903 the install fails at about 60%.  Error codes are 0xC1900101 - 0x30018 with message "The installation failed in the FIRST_BOOT phase with error during SYSPREP operation.  Reading some other users' comments it may be I need a BIOS pgrade.  Any other suggestions welcomed.  If I need a BIOS upgrade I don't know how to do that.  Many thanks all.

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