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Solution: If the system does not return from sleep (standby) mode, it might have entered sleep (standby)
or hibernation mode automatically because the battery is depleted. Check the sleep (standby) indicator.
– If the sleep (standby) indicator is on, your computer is in sleep (standby) mode. Connect the ac
power adapter to the computer; then press Fn.
– If the sleep (standby) indicator is off, your computer is in hibernation mode or power-off state. Connect
the ac power adapter to the computer; then press the power button to resume operation.
If the system still does not return from sleep (standby) mode, your system might stop responding and you
might not be able to turn off the computer. In this case, you need to reset the computer. If you have not
saved your data, it might be lost. To reset the computer, press and hold the power button for 4 seconds
or more. If the system is still not reset, remove the ac power adapter and the battery.
• Problem: Your computer does not enter sleep (standby) or hibernation mode.
Solution: Check whether any option has been selected to disable your computer from entering sleep
(standby) or hibernation mode.
If your computer tries to enter sleep (standby) mode but the request is rejected, the device in the USB
connector might be 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 small amount of power. This is not
a defect. For details, refer to “Power-saving modes” on page 31
.
Drives and other storage devices
Hard disk drive problems
• Problem: The hard disk drive makes a rattling noise intermittently.
Solution: The rattling noise might be heard:
– When the hard disk drive begins or nishes getting access to data.
– When you carry the hard disk drive.
– When you carry your computer.
This is a normal characteristic of a hard disk drive and is not a defect.
• Problem: The hard disk drive does not work.
Solution: In the startup menu in the ThinkPad Setup, make sure that the hard disk drive is included in the
“Boot priority order” list. If it is included in the “Excluded from boot order” list, it is disabled. Select the
entry for it in the list and press the x key. This moves the entry to the “Boot priority order” list.
• Problem: After setting a hard disk password on the hard disk drive of the computer, you moved the drive
to another computer. Now you cannot unlock the hard disk password.
Solution: Your computer supports an enhanced password algorithm. Computers older than yours might
not support such a security function.
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.
148 User Guide