HP Compaq Presario,Presario SR1500 Supplementary Manual page 19

Keyboard and Mouse (continued )
Symptom
Optical mouse does not
track cursor well.
Mouse cursor moves
too fast.
Power
Symptom
PC will not turn on or start.
Problem
The optical sensor uses the
pattern of the surface to
track the position of the
cursor. Reflective surfaces,
grooved surfaces, glass, or
other see-through surfaces
inhibit the ability of the
sensor to track the cursor.
Mouse sensor is dirty.
The wireless mouse moves
the cursor more quickly than
a standard mouse.
Problem
PC is not securely connected
to an external power source.
Green power supply light on
back of PC is out.
Monitor is not connected or
is not on.
Line voltage selection switch
is not in the proper position
for your country/region
(115V /230V ).
Wall outlet is defective.
Wrong memory modules
were used in an upgrade, or
memory modules were
installed in the wrong
location.
Hard disk drive is damaged.
After an upgrade or repair,
the drive power, data, or
power supply cables may
not be properly connected.
Solution
Place the mouse on a mouse pad or white sheet of paper.
Wipe the light sensor lens on the bottom of the mouse with a
lint-free cloth (not paper).
Adjust the mouse speed in Windows.
Solution
Ensure that cables connecting the PC to the external power
source are plugged in properly.
When the cables connecting the PC to the external power
source are plugged in properly and the wall outlet is
functioning, the green power supply light should be on; if the
light is not on, refer to the Warranty and Support Guide to
contact Support.
Connect the monitor to the PC, plug it in, and turn it on.
Set the line voltage selection switch to the correct setting for
your country/region, or refer to the Warranty and Support
Guide to contact Support.
Test the outlet by connecting a different electrical device to
the outlet.
Reinstall the old memory to return your PC to its original state.
Refer to the Upgrading and Servicing Guide for instructions.
Press the Help ? button on the keyboard to open the Help
and Support Center, or refer to the Warranty and Support
Guide to contact Support for replacement details.
Reseat drive power, data, and power supply cables. See the
Upgrading and Servicing Guide for instructions.
PC Troubleshooting and System Recovery Guide
15