Dell Inspiron 1720 User Manual

Troubleshooting 125
Video and Display Problems
Fill out the "Diagnostics Checklist" on page 178 as you complete these
checks.
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
If the display is blank
NOTE: If you are using a program that requires a higher resolution than your
computer supports, it is recommended that you attach an external monitor to your
computer.
C
HECK THE BATTERY — If you are using a battery to power your computer, the
battery charge may be depleted. Connect the computer to an electrical outlet
using the AC adapter, and then turn on the computer.
TEST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
CHECK THE AC ADAPTER — Check the AC adapter cable connections. If the
AC adapter has a light, ensure that the light is on.
CONNECT THE COMPUTER DIRECTLY TO AN ELECTRICAL OUTLET — Bypass power
protection devices, power strips, and extension cables to verify that the
computer turns on.
ADJUST THE POWER PROPERTIES — Search for the keyword sleep in Windows
Help and Support.
SWITCH THE VIDEO IMAGE — If your computer is attached to an external
monitor, press <Fn><F8> to switch the video image to the display.
If the display is difficult to read
ADJUST THE BRIGHTNESS — Press <Fn> and the up- or down-arrow key.
MOVE THE EXTERNAL SUBWOOFER AWAY FROM THE COMPUTER OR MONITOR — If
your external speaker system includes a subwoofer, ensure that the subwoofer
is at least 60 cm (2 ft) away from the computer or external monitor.
ELIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights,
halogen lamps, or other appliances.
ROTATE THE COMPUTER TO FACE A DIFFERENT DIRECTION — Eliminate sunlight
glare, which can cause poor picture quality.

Dell Inspiron 1720 Specifications

General

Bus type	FSB
Stepping	C0
Tjunction	105 °C
Processor cache	6 MB
Processor cores	2
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo T9000 Series
Processor socket	LGA 3647 (Socket P)
Processor codename	Penryn
Processing Die size	107 mm²
Processor frequency	2.5 GHz
Processor cache type	L2
Processor lithography	45 nm
Processor system type	Up
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	35 W
Processor core voltage (AC)	1.062 - 1.150 V
CPU multiplier (bus/core ratio)	12.5
Number of Processing Die Transistors	410 M
HDD speed	5400 RPM
HDD interface	SATA
Card reader integrated	Yes
Display diagonal	17 \
Display resolution	1440 x 900 pixels
Native aspect ratio	16:10
Internal memory	4 GB
Memory clock speed	667 MHz
Internal memory type	DDR2-SDRAM
Memory layout (slots x size)	2 x 2 GB
Discrete graphics card model	NVIDIA GeForce Go 8600M GT
Maximum graphics card memory	0.256 GB
Keyboard layout	QWERTY
Pointing device	Touchpad
Type	PC
Modem speed	56.6 Kbit/s
Wireless technology	802.11n
Bluetooth version	2.0+EDR
Bundled software	Microsoft Works 9.0 - Danish
Operating system installed	Windows Vista Home Premium
Number of battery cells	6
TV-out type	S-Video
Charging port type	DC-in jack
Serial ports quantity	0
USB 2.0 ports quantity	5
AC adapter power	90 W
Processor code	SLAYY
Processor ARK ID	33917
Processor package size	35 x 35 mm

Weight and Dimensions

Depth	293 mm
Width	394 mm
Weight	3450 g
Height (rear)	44 mm
Height (front)	39 mm