Errors Without Messages - Lenovo 3000 N100 0689 Supplementary Manual

Code Message
N/A* Parity Check 1 nnnn
N/A* Parity Check 2 nn
N/A Press F1 to resume, F2 to
Setup, F3 for previous

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
Solution:
Description
Parity error found in the system bus. BIOS attempts to
locate the address and display i on the screen. If it cannot
locate the address, it displays ????. Parity is a method for
checking errors in binary data. A parity error indicates that
some data has been corrupted.
Parity error found in the I/O bus. BIOS attempts to locate
the address and display it on the screen. If it cannot locate
the address, it displays ????.
Displayed after any recoverable error message. Press F1 to
start the boot process or F2 to enter Setup and change the
settings. Press F3 to display the previous screen (usually an
initialization error of an Option ROM, i.e., an add-on card).
Write down and follow the information shown on the
screen.
computer; then turn it on again, and listen again. If you are using
an external monitor, refer to "Computer screen problems" on page
17.
→ If a user password is set, press any key to display the user password
prompt, and then type the correct password and press Enter.
If the user password prompt does not appear, the brightness level
might be set to minimum brightness. Adjust the brightness level by
pressing Fn+F11.
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.
Solving computer problems
Chapter 3. Solving computer problems
13