Lenovo Z61t - Manual (Page 25)

If one of the following error code messages is displayed on the screen, have the computer serviced:
0175: Bad CRC1, stop POST task
0177: Bad SVP data, stop POST task. Checksum of the supervisor password in the EEPROM is not
correct.
0187: EAIA data access error
0188: Invalid RFID serialization information area
0189: Invalid RFID configuration information area
0192: System Security - Embedded Security hardware tamper detected.
0260: System timer error
0270: Real time clock error
02D0: System cache error
02F4: EISA CMOS not writable
02F5: DMA test failed
02F6: Software NMI failed
02F7: Fail-safe timer NMI failed
Fan error
Thermal sensing error
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 by
pressing and holding the power button for more than 4 seconds; then turn it on and
listen again. If you are using an external monitor, refer to “Computer screen problems”
on page 21
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 the 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.)
Solving computer problems
Chapter 3. Solving computer problems 17