Solution to the problem that Dell cannot start after converting win10 to win7

Currently, Dell computers are shipped with win10 system, but some netizens are not used to using win10 system and want to change win10 to win7 system. But what should you do if Dell cannot start after reinstalling the system? Today, the editor will tell you about the solution to the problem that Dell cannot start after changing win10 to win7. Come and take a look.

1. Start the computer, see the DELL icon, quickly press the F12 or F2 key to enter the BIOS (press the F2 or F12 key for Dell computers, other brands of computers will be different), the interface is as follows:

2. Uncheck PTT ON in PTT Security under the Security option. The interface is as follows:

3. Uncheck the Secure Boot option Change Enabled in Secure Boot Enable below to Disabled, and the interface is as follows:

#4. Check Enable Legacy Option ROMS in Advanced Boot Option under General option. The interface is as follows:

5. Change the UEFI in the Boot List Option in the Boot Sequence under the General option to Legacy. The interface is as follows:

6. The last step is to save a series of settings (click Apply first, then click OK after the confirmation box pops up). The specific operation is as shown below

The above is the solution to the problem that Dell cannot start after changing win10 to win7. I hope it can help everyone.

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