Action: Run the Windows Disk Defragmenter program.Note: Depending on the size of the hard disk drive and amount of data currently stored on the hard diskdrive, the disk-defragmentation process might take up to several hours to complete.On the Windows 7 operating system, do the following:1. Close any programs that are currently running and close any open windows.2. Click Start ➙ Computer.3. Right-click your C drive entry and then click Properties.4. Click the Tools tab.5. Click Defragment Now, then click Continue.6. Click Defragment Now again to start a disk-defragmentation process.On the Windows 8 or Windows 8.1 operating system, do the following:1. Close any programs that are currently running and close any open windows.2. On Windows 8, open File Explorer and click Computer. On Windows 8.1, open File Explorer.3. Right-click your C drive entry and then click Properties.4. Click the Tools tab and then click Optimize.5. Click Optimize in the Optimize Drives window that is displayed to start a disk-defragmentation process.Insufficient memorySymptom: Insufficient memoryIn general, the more memory that is installed, the better the Windows operating system runs.Action: Install additional memory. For information about purchasing memory, see “Lenovo Support Website” on page 33. For step-by-step instructions on installing memory, see “Installing or replacing a memorymodule” on page 92.If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” onpage 56 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 33.Printer problemsSymptom: 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 thecomputer.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 BIOSsettings. For more information about BIOS settings, see Chapter 6 “Using the Setup Utility program”on page 57.If the problem persists, run the tests described in the documentation that comes with your printer. If youcannot correct the problem, have the computer serviced. See “Lenovo Support Web site” on page 33.Chapter 5. Troubleshooting and diagnostics 53