External Devices Unable To Operate Normally; Hard Disk Unable To Be Accessed - Lenovo ThinkCentre M600t User Manual

External Devices Unable to Operate Normally

Keyboard Unable to Operate Normally
Check...
Whether the keyboard cable is connected appropriately
and securely.
Whether the keyboard is clean and any key is clamped.
Mouse Unable to Operate Normally
Check...
Whether the mouse cable is connected appropriately and
securely.
Whether the bottom or inside of mouse is clean.
Whether sluggish movement, dullness and offset occur
for the mouse pointer on the screen.
Devices Connected to System Serial, Parallel Connectors Unable to Operate Normally
Check...
Whether the peripheral cable is connected appropriately
and securely.
Whether the device drivers are loaded into the operating
system appropriately.
Whether the peripheral is in good condition and operate
normally.

Hard Disk Unable to Be Accessed

Check...
Whether the hard disk is formatted appropriately.
Whether the hard disk is infected by viruses.
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ThinkCentre M600t User Manual V1.0 (E-version)
Solution
Plug the keyboard cable into the keyboard connector at
the back of the computer after the computer is turned off
(USB devices can be plugged/unplugged when the
computer is powered on). Corresponding connector can
be found readily according to the color.
Cleanse the keyboard with brush or inflator and restore
the clamped keys.
Solution
Plug the mouse cable into the mouse connector at the
back of the computer after the computer is turned off
(USB devices can be plugged/unplugged when the
computer is powered on). Corresponding connector can
be found readily according to the color.
You may wipe the bottom or cleanse the ball inside if they
are dirty.
• Ensure the desktop and the mouse pad is flat and
clean for the mouse.
• Try to replace the desktop or mouse pad of the optical
mouse for their effect will vary by factors such as
material and color of the desktop or mouse pad (glass
or other medium with special colors may lead to
mouse malfunction).
Solution
Plug the peripheral cable into corresponding connector at
the back of the computer after the computer is turned off
(USB devices can be plugged/unplugged when the
computer is powered on).
Check the device property and drivers status, or re-install
drivers.
Replace it with known perfect device or connect it to
other computers that operate normally to verify.
Solution
Format the hard disk according to the actual condition of
the system appropriately.
Scan and remove viruses by using common, anti-virus
software with license.