Compaq 1600XL - Manual (Page 79)

P RESARIO N OTEBOOK M AINTENANCE AND S ERVICE G UIDE 1600XL S ERIES T ROUBLESHOOTING 31
Presario 1600XL Series
Model 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143, 1600-XL144,
1600-XL146, 1600-XL147, 1600-XL150 XL156, XL157, XL255, XL256, XL257, and XL258
Solving Keyboard/Numeric Keypad Problems
Some common causes and solutions for keyboard/numeric keypad problems are listed in
the following table.
Solving Memory Problems
Some common causes and solutions for memory problems are listed in the following table.
Solving Keyboard/Numeric Keypad Problems
Problem Probable Cause Solution(s)
Embedded numberic
keypad on notebook
keyboard is disabled.
Num Lock function is not
enabled.
Press the Shift+NumLk keys to
enable the Num Lock function and
embedded numberic keypad. The
Num Lock light on the notebook
turns on.
Embedded numeric
keypad is disabled and
Num Lock function is
on.
External numeric keypad is
connected to the notebook.
Disconnect the external numeric
keypad from the notebook.
Solving Memory Problems
Problem Probable Cause Solution(s)
Memory count during
Power-On Self-Test
(POST) is incorrect.
Optional memory expansion
card is installed incorrectly, is
incompatible with the
computer, or is defective.
Ensure that the optional memory
expansion card is installed
correctly.
“Out of Memory”
message is displayed
on the screen or
insufficient memory
error occurs during
operation.
System ran out of memory for
the application.
Check the application
documentation for memory
requirements.
If necessary, install additional
memory.
Too many TSR (terminate-
and-stay-resident)
applications are running.
Remove from memory any TSR
applications that you do not need.