Lenovo Z60T - Manual (Page 42)

v The ac adapter is connected to the computer and the power cord is
plugged into a working electrical outlet.
v 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.
Problem:
My screen goes blank while the computer is on.
Solution
Your screen saver or power management may be enabled. Touch the
TrackPoint pointing device or the touch pad, or press a key to exit the
screen saver, or press the power switch to resume from standby or
hibernation mode.
Problem:
The DOS full-screen looks smaller.
Solution:
If you use a DOS application that supports only 640×480 resolution (VGA
mode), the screen image might look slightly distorted or appear smaller
than the display size. This is to maintain compatibility with other DOS
applications. To expand the screen image to the same size as the actual
screen, start the ThinkPad Configuration Program and click LCD ; then
select the Screen expansion function. (The image might still look slightly
distorted.)
A password problem
Problem:
I forgot my password.
Solving computer problems
20 ThinkPad ® Z60t and Z60m Series Service and Troubleshooting Guide