Lenovo ThinkPad T60 Series, Service And Troubleshooting Manual

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Note: If you are not sure whether you heard any beeps, turn off the
computer; then turn it on again, and listen again. If you are using
an external monitor, refer to “Computer screen problems” on page
23.
Solution:
→
If a power-on password is set, press any key to display the power-on
password prompt, and then type the correct password and press Enter.
If the power-on password prompt does not appear, the brightness level
might be set to minimum brightness. Adjust the brightness level by
pressing Fn+Home.
If the screen still remains blank, make sure that:
– The battery is installed correctly.
– The ac adapter is connected to the computer and the power cord is
plugged into a working electrical outlet.
– The computer power is on. (Turn on the power switch again for
confirmation.)
If these items are properly set, and the screen remains blank, have the
computer serviced.
Problem:
When I turn on the machine, nothing appears on the screen, but I hear
two or more beeps.
Solution:
→
Make sure that the memory card is installed correctly. If it is, but the
screen is still blank, and you hear five beeps, have the computer
serviced.
If you hear 4 cycles of 4 beeps each, the Security Chip has a problem.
Have the computer serviced.
Problem:
When I turn on the machine, only a white pointer appears on a blank
screen.
Solution:
→
Reinstall your operating system, and turn on the computer. If you
still see only the pointer on the screen, have the computer serviced.
Solving computer problems
16
ThinkPad
®
T60 Series Service and Troubleshooting Guide