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4. Click the Tools tab.
5. Click Optimize.
6. Click Optimize again to start a disk-defragmentation process.
Insufcient memory
Symptom: Insufcient memory
In general, the more memory that is installed, the better the Windows operating system runs.
Action: Install additional memory. For information about purchasing memory, see Chapter 11 “Getting
information, help, and service” on page 125. For step-by-step instructions on installing memory, see
“Installing or replacing a memory module” on page 35.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see Chapter 11 “Getting information, help, and service” on page 125.
Printer problems
Symptom: The printer does not work.
Actions: Verify that:
1. The printer is turned on and is online.
2. Paper is loaded correctly.
3. The printer signal cable is securely connected to the correct parallel, serial, or USB connector on the
computer.
Note: Non-IEEE-approved printer signal cables might cause unpredictable problems.
1. Any device drivers and other software that came with the printer are correctly installed.
2. You have assigned the printer port correctly in your operating system, application program, or BIOS
settings. For more information about BIOS settings, see Chapter 7 “Using the Setup Utility program”
on page 95.
If the problem persists, run the tests described in the documentation that comes with your printer. If you
cannot correct the problem, have the computer serviced. See Chapter 11 “Getting information, help, and
service” on page 125.
Serial port problems
Use this information to troubleshoot the serial port and devices attached to the serial port.
Symptom: Serial port cannot be accessed.
Actions:
• Ensure that the serial cable is securely connected to the serial port on the computer and to the serial
device. If the serial device has its own power cord, ensure that it is attached to a properly grounded
electrical outlet.
• If the serial device has its own On/Off switch, ensure that it is in the On position.
• If the serial device has an Online switch, ensure that it is in the Online position.
• If the serial device is a printer, ensure that paper is loaded correctly.
• Verify that any software supplied with the serial device is correctly installed. Refer to the documentation
for the serial-device option.
122 ThinkCentre User Guide