Getting Inaccessible Boot Device

So I have a HP laptop running Windows 10, 1 day last week system will not post. Tried repair, system rollback, advanced setting, checked BIOS setting. Noticed BIOS was out of date, Loaded the update to a flash drive and updated BIOS.

Pulled the hard drive and replaced it (thinking it might be hardware related).

Was asked to install Windows 7 instead of 10. Do all the updates, restart several times- No issues.

Using external Hard Drive reader, Copied files onto the new image.

Only after coping the files, do I start to get the "Inaccessible boot device" during posting. But the posting has changed from the legacy Win 7 startup to the UEFI Win 10 posting, That's when I get the message.

So either the hard drive controller on the motherboard is going back or some kind of virus or malware was transferred onto the new hard drive.

Has anyone heard or seen a virus or malware that acts like this?

Thank you.

I think your problem nothing to do with malware infection.

Windows 7 32-bit does not support booting from UEFI firmware mode.

Windows 64-bit support booting from UEFI as long as the HDD where Windows 7 installed is partition as GPT disk.

Windows 7 64-bit does not support Secure Boot and should be disabled from UEFI setup utility.

System build was in Legacy, BIOS confirms this. UEFI is disabled, Secure boot is also disabled.

FreeBooter said:

I think your problem nothing to do with malware infection.



Windows 7 32-bit does not support booting from UEFI firmware mode.

Windows 64-bit support booting from UEFI as long as the HDD where Windows 7 installed is partition as GPT disk.

Windows 7 64-bit does not support Secure Boot and should be disabled from UEFI setup utility.

Please boot your computer with Windows 10 Setup Media and from Windows Recovery Environment start the Command Prompt.

Please type below commands into Command Prompt and press Enter key.

Following commands will repair Master Boot Record (MBR), Boot Sector and BCD Store.

Code:

Bootrec /FixMbr

Bootrec  /FixBoot

Bootrec  /RebuildBcd

Reboot your computer to check is the issue resolved.