Lenovo ThinkPad R50 Greek - Service and troubleshooting guide for ThinkPad R50 - Page 27

Errors without messages - fan

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Solving computer problems Message Solution Fan error The cooling fan has failed. Have the computer serviced. EMM386 Not Installed - Edit C:\CONFIG.SYS and change a line from Unable to Set Page Frame Base Address. device=C:\WINDOWS\EMM386.EXE RAM to device=C:\WINDOWS\EMM386.EXE NOEMS CardBus Configuration Error -Device Disabled Thermal sensing error Authentification of system services failed. and save this file. Go to IBM BIOS Setup Utility. Press F9 and then Enter to load the default setting. Press F10 and then Enter to restart the system. The thermal sensor is not functioning correctly. Have the computer serviced. The IBM Predesktop Area in the HDD is broken. To use the IBM Predesktop Area, get a Recovery CD, and recover the IBM Predesktop Area. Errors without messages Problem: When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up. 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: v The battery is installed correctly. 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. Chapter 2. Solving computer problems 17

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Message
Solution
Fan error
The cooling fan has failed. Have the computer serviced.
EMM386 Not Installed —
Unable to Set Page
Frame Base Address.
Edit C:\CONFIG.SYS and change a line from
device=C:\WINDOWS\EMM386.EXE RAM
to
device=C:\WINDOWS\EMM386.EXE NOEMS
and save this file.
CardBus Configuration
Error —Device Disabled
Go to IBM BIOS Setup Utility. Press F9 and then
Enter
to load the default
setting. Press F10 and then
Enter
to restart the system.
Thermal sensing error
The thermal sensor is not functioning correctly. Have the computer serviced.
Authentification of
system services failed.
The IBM Predesktop Area in the HDD is broken. To use the IBM Predesktop
Area, get a Recovery CD, and recover the IBM Predesktop Area.
Errors without messages
Problem:
When I turn on the machine, nothing appears on the screen and the
machine does not beep while starting up.
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:
v
The battery is installed correctly.
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.
Solving computer problems
Chapter 2. Solving computer problems
17