Lenovo 4220 Laptop User Manual


 
6. Turn on the computer and leave it on for approximately 10 seconds. Then,
turn off the computer by holding the power switch for approximately five
seconds.
7. Repeat step 1 and step 2.
8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1
and pin 2).
9. Reinstall the secondary hard disk drive if you have removed it. See
“Replacing the secondary hard disk drive” on page 29.
10. Reinstall the computer cover and connect the power cords. See “Completing
the parts replacement” on page 40.
44 User Guide