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Error
code
Beep symptom Error message
Solution
0254 Two short beeps
0254: System NV7 Volume
checksum bad - Default
conguration used
Power off to discharge CMOS, and
then restart your computer.
0260 Two short beeps
0260: System timer error
Have the computer serviced.
0270 Two short beeps 0270: Real time clock error Have the computer serviced.
0271 Two short beeps
0271: Check date and time
settings
Press F1 to enter into the BIOS
Setup menu, press F9 to load the
defult settings, press F10 to exit
and restart your computer.
0280 Two short beeps 0280: Previous boot incomplete -
Default conguration used
Load default settings in BIOS
Setup Utility.
If you still see the same error
message, have the computer
serviced.
02D0 Two short beeps
02D0: System cache error - Cache
disabled
The cache is disabled. Have the
computer serviced.
02D2 Two short beeps
CPU Variable MTRR congure
failed.
Have the computer serviced
02F0
none
02F0: CPU ID: Invalid CPU is installed. Install
correct CPU.
If you still see the same error
message, have the computer
serviced.
1802 Two short beeps 1802: Unauthorized network card
is plugged in - Power off and
remove the miniPCI network card.
Power off your computer and
remove the PCI Express Mini Card.
1804 Two short beeps Unauthorized WAN card is
plugged in - Power off and remove
the WAN card.
Power off and remove the WAN
card.
none
Two short beeps
System Conguration Data Read
Error
Press F1 to enter the BIOS Setup
menu. Press F9 to load the default
settings. Press F10 to exit. Restart
the computer.
2200
none
2200: Machine Type and Serial
Number are invalid.
Machine Type and Serial Number
are invalid. Have the computer
serviced
2201
none
2201: Machine UUID is invalid. Machine UUID is invalid. Have the
computer serviced.
Errors without messages
• Problem: My screen keeps blanking when I do not want it to.
Solution: You can disable any system timers, such as the LCD turn-off timer or the blank timer.
For Windows 7 and Windows Vista:
– Start Power Manager. Switch to Advanced view.
– Click the Power plan tab, and then select Maximum Performance from the predened power plans.
For Windows XP:
Chapter 10. Troubleshooting computer problems 161