Dell E521 Owner's Manual - Page 38

Lockups and Software Problems, The computer does not start up, The computer stops responding - diagnostic lights

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Page 38 highlights

TEST THE KEYBOARD - Connect a properly working keyboard to the computer, and try using the keyboard. E N S U R E T H A T T H E U S B P O R T S A R E E N A B L E D I N T H E S YS T E M S E T U P P R O G R A M - See "System Setup" on page 111) R U N T H E H A R D W A R E TR O U B L E S H O O T E R - See "Resolving Software and Hardware Incompatibilities" on page 55. Lockups and Software Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. The computer does not start up C H E C K T H E D I A G N O S T I C L I G H T S - See "Diagnostic Lights" on page 49. ENSURE THAT THE POWER CABLE IS FIRMLY CONNECTED TO THE COMPUTER AND TO THE ELECTRICAL OUTLET The computer stops responding NOTICE: You might lose data if you are unable to perform an operating system shutdown. TU R N T H E C O M P U T E R O F F - If you are unable to get a response by pressing a key on your keyboard or 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. A program stops responding END THE PROGRAM - 1 Press simultaneously. 2 Click Applications. 3 Click the program that is no longer responding. 4 Click End Task. 38 Solving Problems

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38
Solving Problems
Lockups and Software Problems
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Product
Information Guide
.
The computer does not start up
The computer stops responding
NOTICE:
You might lose data if you are unable to perform an operating system shutdown.
A program stops responding
T
EST
THE
KEYBOARD
—
Connect a properly working keyboard to the computer, and try using the keyboard.
E
NSURE
THAT
THE
USB
PORTS
ARE
ENABLED
IN
THE
SYSTEM
SETUP
PROGRAM
—
See "System
Setup" on page 111)
R
UN
THE
H
ARDWARE
T
ROUBLESHOOTER
—
See "Resolving Software and Hardware Incompatibilities"
on page 55.
C
HECK
THE
D
IAGNOSTIC
L
IGHTS
—
See "Diagnostic Lights" on page 49.
E
NSURE
THAT
THE
POWER
CABLE
IS
FIRMLY
CONNECTED
TO
THE
COMPUTER
AND
TO
THE
ELECTRICAL
OUTLET
T
URN
THE
COMPUTER
OFF
—
If you are unable to get a response by pressing a key on your keyboard or
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.
E
ND
THE
PROGRAM
—
1
Press <Ctrl><Shift><Esc> simultaneously.
2
Click
Applications
.
3
Click the program that is no longer responding.
4
Click
End Task
.