Pre-assembled WIN8 system modified with u disk Win7

Lenovo ThinkPad T440 pre-installed WIN8 with U disk to guide the conversion win7

0. Press the ENTER key and select F1 to enter the BIOS

1. Modify the security boot option in secure boot to Disabled

2. Modify Starup in uefi/legacy boot to both

3. Modify the Restart option in OS Optimized defaults to Disabled

4.F10 Select Yes, enter

5. Restart the computer, press ENTER, and select F12

6. Select USB stick to boot, you can enter the U disk PE

7. Run the Disk Management tool after entering PE, delete and format all partitions

8. Run cmd and type the following in turn

DiskPart

Select Disk 0

Clean

Convert MBR

9. Partition the disk and install the operating system as normal steps

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