Lenovo B4400 Notebook - Manual (Page 28)

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Chapter 4. Troubleshooting
When do I need to change the boot priority?
The default boot priorities are UEFI First for Windows 8 and Legacy First
for Windows 7. If you need to install a legacy operating system (that is, an
earlier version than that of your current operating system) on your
computer, you will need to change the boot priority to Legacy First. The
legacy operating system cannot be installed if you do not change the boot
priority.
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Getting help
How can I contact the customer support center?
See “Chapter 3. Getting help and service” of Lenovo Safety and General
Information Guide.