Inspiron 15 70002-in-1 Service Manual

The keyboard is not the first device initialized by Setup. As a result, if you press a keystroke too early, the keyboard is locked out. In such case, a keyboard error message is displayed on the screen, and you cannot restart your computer with the Ctrl+Alt+Del key combination.

To prevent the keyboard from locking, wait until the keyboard is initialized completely. The keyboard is initialized if one of the following occurs:

• The keyboard lights flash.
• The F2=Setup prompt appears at the top-right corner of the screen during boot.