Helpdesk -
45
My Mouse Does Not Work
1. Your mouse is not properly connected.
Follow the same procedure as for checking keyboard connection.
2. The mouse needs to be cleaned.
a. Switch your computer OFF.
b. Turn the mouse upside down.
c. Open the underside of the mouse.
d. Extract the track ball from the mouse belly and clean it.
e. Gently clean the bearings in the track ball housing with a moist soft cloth. If
it needs further cleaning, carefully remove any dirt that has accumulated on
the bearings with a solid, blunt object.
Note: Optical mice do not have a track ball and do not get as dirty as regular mice since they do not
pick up as much dust.
3. The controller properties may not be properly set up.
If the pointer moves with difficulty, too quickly or too slowly, or if
double clicking does not work all the time, try adjusting the prop-
erties of your controller.
a. Click on ‘Start’
> Control Panel > Mouse.
b. Click on the different tabs to access the properties and mod-
ify how the mouse acts.
c. Click on Apply to confirm your settings then on OK to close
the window.
Display
The Display Is Not Centred or Gets Wavy
1. I see thin lines scrolling down the screen, flickering images or wavy displays.
a. Interference from other appliances or magnetic sources may cause irregular images on your screen.
b. Switch your computer off and restart it. This should automatically adjust your display.
2. The image is smaller or larger than the screen surface.
a. Adjust the monitor display, image size and/or position with the screen controls.
b. If you have an LCD screen, use its optimal resolution. LCD screens are designed to use a specific
resolution. Changing this resolution may cause the display to grow beyond or shrink away from the
edges of the screen. (See your monitor documentation and/or
InfoCentre
).
Note: The magnitude of interference, noise or distortion depends on your screen's proximity to sources
such as TV sets, mobile phones, other monitors, refrigerators, large stereo speakers, power adapters, hal-
ogen lighting with built-in power supply or motor driven appliances. Faulty fluorescent light assemblies
or the proximity to high voltage lines can also cause distorted images. Place your computer as far as
possible from these sources.
USB keyboard or mouse
PS/2 keyboard or mouse