You will need to install both versions (32-bit and 64-bit) in Legacy BIOS mode.



This does not work if you have a 64-bit UEFI firmware.

SOURCE: UEFI Firmware

While the PC is in UEFI mode,...

If you use UEFI mode, you will not be able to install 32-bit version of Windows.

edit: SOURCE: UEFI Firmware

While the PC is in UEFI mode, the Windows PE version must match the PC architecture....

SOURCE: https://msdn.microsoft.com/en-us/library/windows/hardware/dn898510(v=vs.85).aspx

UEFI/GPT-based hard drive partitions

Microsoft® reserved partition (MSR)
Beginning in Windows 10, the...

Do you know how to choose the Legacy BIOS or UEFI boot mode?

Depending how the Windows install media is booted (Legacy BIOS or UEFI) Windows creates either MBR or GPT partition table on the...

The best way to create a bootable Windows 10 USB flash drive.
USB Flash Drive - Create to Install Windows 10 - Windows 10 Forums
OPTION ONE: Use Media Creation Tool to create Bootable Windows 10...

How do you select GPT or MBR when installing Windows 7/8/10.

https://www.tenforums.com/installation-setup/34698-windows-10-partition-installs.html



If you delete all the partitions you don't...

Yes.

When installation is finished, Windows 10 will be activated automatically.

But activation would not be successful if you receive the following error message: This product key is being used on another PC.

So you will first need to perform a clean installation of Windows...

This product key is being used on another PC. Please try a different key. Error code: 0x803FA071

57703

56724

https://support.lenovo.com/en/docs/um016003

"Novo button. When the computer is off, press this button to start the Lenovo Recovery system or the BIOS setup utility, or to enter the boot menu."
...

Boot the computer using the Windows 7/8/10 installation disc or USB flash drive.
On the first screen, press SHIFT+F10 to bring up the command prompt.
Run the following command.

bcdedit...

SOURCE: https://msdn.microsoft.com/en-us/library/windows/hardware/dn898490(v=vs.85).aspx

BCDBoot is a command-line tool used to configure the boot files on a PC or device to run the Windows...