no power to laptop????

[bonz1121]

i am trying to figure out whats wrong with my uncle laptop. he has only had it for 6 months and had been working fine. he said one day that he went to turn it on and nothing happened. when i go toturn it on and i have it plugged in its always the same. the lights on the keyboard and display come on for about 2 seconds and then go off. ive tried different external batteries and no luck. this is a brand new laptop so i wouldn't think that it would be the power supply, would it? if so how can you check to see if ones still good or not.
ive got experience in computers and have taken apart my share of laptops. so if anyone has any ideas on what could be wrong let me know. here are the specs on the computer.
DELL Latitude D600
Processor
Processor type
Pentium M

Chipset type
Intel 855PM

Clock speed
1.60 GHz

Data bus speed
400 MHz

Processor manufacturer
Intel

OS Provided
OS provided
Microsoft Windows XP Home Edition

RAM
Max supported RAM
2 GB

Memory specification compliance
DDR266/PC2100

RAM Technology
DDR SDRAM-266 MHz

RAM installed size
128 MB

Optical Storage
CD / DVD type
CD-RW / DVD-ROM

CD / DVD drive
CD-RW / DVD-ROM Plug-in module

CD / DVD read speed
24x

Optical storage enclosure type
Plug-in module

Optical Storage (2nd)
2nd optical storage type
None

Audio Output
Audio output compliant standards
AC '97

Audio output type
Sound card

Audio Input
Audio input type
None

Battery
Battery capacity
48 Wh

Battery technology
Lithium ion

Installed battery qty
1

Max supported batteries
2

Cabinet (Chassis)
Included expansion base(s)
Port replicator

General
Built-in devices
Stereo speakers

Color
Silver

Mobile technology
Intel Centrino

System type
Notebook

Cache Memory
Cache Memory Type
L2 cache

Cache size
1 MB

Modem
Max transfer rate
56 Kbps

Modem protocols & specifications
ITU V.92

Modem type
Fax / modem

Video Output
Color max resolution (external)
24-bit (16.7 million colors)

Graphics processor
ATI MOBILITY RADEON 9000

Max resolution (external)
1600 x 1200

Video output interface type
AGP 4x

Display (Projector)
Color support
24-bit (16.7 million colors)

Display (projector) diagonal size
14.1

Display (projector) technology
TFT active matrix

Max resolution
1024 x 768

Networking
Data link protocol
Ethernet, IEEE 802.11b, Fast Ethernet, Gigabit Ethernet

Networking standards
IEEE 802.11b

Networking type
Network adapter

Storage Floppy Drive
Floppy drive type
None

Storage Hard Drive
Hard drive
30 GB IDE

Input Device
Input device type
Keyboard, Touchpad, Track stick

Interface Provided
Interface provided
1 Docking / port replicator, 1 Serial RS-232, 1 Parallel IEEE 1284 (EPP/ECP), 1 Display / video VGA, 1 Display / video S-video output, 1 Infrared, 1 Microphone Input, 1 Audio Line-out/headphones, 2 Hi-Speed USB, 1 Modem Phone line, 1 Network Ethernet 10Base-T/100Base-TX, 2 Hi-Speed USB, 1 Keyboard Generic, 1 Mouse Generic, 1 Display / video DVI-Analog/Digital, 1 Audio SPDIF, 1 Peripheral


Video Memory
Max video RAM supported
32 MB

Video RAM installed
32 MB

Video memory technology
DDR SDRAM

Video memory type
Video adapter memory

Power Device
Power device form factor
External

Power device frequency required
50/60 Hz

Power device type
Power adapter

Power provided
65 Watt

Storage Removable
Removable storage type
None

Slot Provided
Slot provided
2 (1 free) Memory, 1 (1 free) Smart Card, 1 (1 free) CardBus Type I/II



Storage Controller
Storag

[Sylvander]

I know nothing about laptops, but since no-one else is helping I'll do what I can.

Use the following to help put your symptoms in context.
Sylvander’s Diagnostic Flowcharts
Download a copy of my diagnostic flowcharts from here
www.erniek.eclipse.co.uk/downloads/sylvanderdiags.zip
and print them to leaf through.
Begin on the STARTUP chart.
The laptop isn't exactly "dead", but the processor seems to be switching on the PSU, the POST began, detected a problem [hardware?] and switching the PSU off again.
So what hardware problem is being detected?
Incorrect power supply voltages? [See the SYSTEM chart]
If the power supply is ok, the next step is usually to do a "bare-bones boot" by disconnecting all but essential hardware to reduce the number of suspects.
Hopefully the bad hardware item will be one of those removed, the laptop will begin working, and you then begin adding back the disconnected items one-by-one to see which causes the problem to return.

See:
-----------------------------------------------
NO POST, NO BEEP, NO VIDEO
www.pcguide.com/vb/showthread.php?t=39685
-----------------------------------------------

[PrntRhd]

I would suggest you have Dell fix it, it should be under warranty!