Fan Problems; Lockups And Software Problems; The Computer Does Not Start Up; The Computer Stops Responding - Dell bpcwcsn_5 - OptiPlex - 740 User Manual

Fan Problems

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Information Guide.
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet before
opening the cover.
NOTICE:
To prevent static damage to components inside your computer, discharge static electricity from your
body before you touch any of your computer's electronic components. You can do so by touching an unpainted
metal surface on the computer.
C
H E C K T H E C A B L E C O N N E C T I O N S
fan connector on the system board (see "System Board Components" on page 28 for mini tower
computers, and "System Board Components" on page 102 for desktop computers).

Lockups and Software Problems

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Information Guide

The computer does not start up

C D
H E C K T H E I A G N O S T I C
E
N S U R E T H A T T H E P O W E R C A B L E I S F I R M L Y C O N N E C T E D T O T H E C O M P U T E R A N D T O T H E E L E C T R I C A L
O U T L E T

The computer stops responding

NOTICE:
You might lose data if you are unable to perform an operating system shutdown.
T
U R N T H E C O M P U T E R O F F
moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer
turns off. Then restart your computer.
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Solving Problems
— Ensure that the card fan cable is connected firmly to the card
.
L — See "Diagnostic Lights" on page 330.
I G H T S
— If you are unable to get a response by pressing a key on your keyboard or
Product
Product