Using the Power-On Password
5-4 IBM ThinkPad 310E/310ED: User’s Guide
2 Press the Enter key.
• When the password is entered correctly, the computer starts
normal operation.
• When you enter the password incorrectly, X appears. Enter
the correct password.
If you fail to enter the correct password after three tries, you
must turn the computer off, wait at least 5 seconds, and turn
it on to try again.