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If your computer tries to enter sleep mode but the request is rejected, the device attached to the USB
connector might have been disabled. If this occurs, do a hot-unplug-and-plug operation for the USB
device.
• Problem: The battery discharges slightly while the computer is in hibernation mode.
Solution: If the wakeup function is enabled, the computer consumes a small amount of power. This is not
a defect. For details, refer to “Power-saving modes” on page 29.
Solid-state drive problems
Problem: When you compress les or folders by use of the data compression function in Windows, and then
decompress them, the process of writing to or reading from the les or folders is slow.
Solution: Apply the disk defragmentation tool in Windows for faster access to the data.
Software problems
Problem: An program does not run correctly.
Solution: Ensure that the problem is not being caused by the program.
Check that your computer has the minimum required memory to run the program. Refer to the manuals
supplied with the program.
Check the following:
• The program is designed to operate with your operating system.
• Other programs run correctly on your computer.
• The necessary device drivers are installed.
• The program works when it is run on some other computer.
If an error message is displayed while you are using the program, refer to the manuals supplied with the
program.
If the program still does not run correctly, contact your place of purchase or a service representative for help.
USB problems
Problem: A device connected to the USB connector does not work.
Solution: Open the Device Manager window. Make sure that the USB device setup is correct, and that the
assignment of computer resource and the installation of the device driver are correct. To open the Device
Manager window, go to Control Panel and click Hardware and Sound ➙ Device Manager. If you are
prompted for an administrator password or conrmation, type the password or provide conrmation.
Chapter 8. Troubleshooting computer problems 103