The computer cannot open the detected invalid signature to check security.

First, Enter the BIOS setup screen, and use the arrow keys and Enter keys on the keyboard or mouse to select and confirm.

Enter the [Boot] page ①, and then select [Security? Boot] Item ②.

Select [OS? Type] item ③, and then set it to [Other? OS]④ The safe startup function can be turned off.

※? Attention:? Set to Windows? UEFI？ The mode is to turn on the safe startup function.

Save the settings and exit. Click the [F 10] key on the keyboard, and then click [OK] ⑤ to restart the computer and enter the operating system.