Lenovo 33472YU, S230U, 33472GU, 3347XF2 manual Beep errors, Memory module problems, Problem Solution

–The ac power adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

–The computer is turned on. (Turn the power button on again for confirmation.)

If a power-on password is set:

–Press any key to display the prompt for the power-on password. If the brightness level of the screen is low, increase it by pressing Home.

–Type the correct password and press Enter.

If these items are correctly set, and the screen remains blank, have the computer serviced.

•Problem: When I turn on the computer, only a white cursor is displayed on a blank screen.

Solution: If you have modified a partition on your hard disk drive by using partition software, information about that partition, or the master boot record might have been destroyed.

1.Turn off the computer, and then turn it on again.

2.If you still see only the cursor on the screen, do the following:

–If you have used the partition software, examine the partition on the hard disk drive by using the software, and recover the partition if required.

–Reset your computer to the factory state. For more information, see Chapter 5 “Recovery overview” on page 47.

If the problem persists, have the computer serviced.

•Problem: My screen goes blank while the computer is on.

Solution: Your screen saver or power management might have been enabled. Do either of the following:

–Touch the TrackPoint pointing device or the touch pad, or press a key to exit the screen saver.

–Press the power button to resume from sleep.

Beep errors

Table 5. Beep errors

Problem	Solution
One short beep, pause, three short beeps, pause, three	Ensure that memory modules are installed correctly. If
more short beeps, and one short beep	they are, and you still hear the beeps, have the computer
	serviced.
Three short beeps, pause, one short beep, pause, one	PCI resource allocation failure. Power off the computer
more short beep, and three short beeps	and remove the PCI devices. If the beeps persist, have
	the computer serviced.
One long and two short beeps	The video function has a problem. Have the computer
	serviced.
Four cycles of four short beeps	The Security Chip has a problem. Have the computer
	serviced.
Five short beeps	The system board has a problem. Have the computer
	serviced.
Five short beeps, pause, five short beeps, and pause	Continue to boot immediately when the error was
	detected.

Memory module problems

Print these instructions now and keep it with your computer for reference later.

Chapter 9. Troubleshooting computer problems 91