Question about Dell XPS 420 PC Desktop

1 Answer

Hey, my Dell XPS 420 won't turn on. I've taken it to a repair guy who tested the power supply - it's fine. The light on the motherboard is on, I just pretty much get nothing when I push the button in. By pretty much I mean every now and then when I hit it I get an amber light around the edge of the button for maybe half a second. Anyway, the tech I took it to reckons maybe it's the motherboard. I'm thinking maybe it's the PCB that the button's on?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Dell Master
  • 12,061 Answers

Speaking from 35 years of experience, it is seldom ever the "Buttons". (But it is worth a check, they should be a push button normally Open, closing when pressed, use a meter set to OHMS to check) Usually if the PSU is OK, then the problem MUST be either the Mother Board, the RAM, any "Add On" Cards, the HDD, or CD/DVD. etc.
To prove what is actually wrong, one must, simply swap out Componentry, and see if the removal makes any difference. If it does, then the most recently removed/swapped component, is your problem. That component needs to be replaced.

If swapping out, removing etc, does NOT affect anything then most likely the repair guy is correct, and indeed the MB is faulty, MB's frequently go faulty, and the PSU still be OK.
Below is a link for your service and repair manual, download the relevant manual for your make model.
http://www.ndc.co.uk/dell_service_manuals.php#GBP

Posted on Oct 14, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Won't Boot after pressing the power buttton


Unplug the tower and press power button for 60 seconds, if this fails the motherboard should be suspect, check all plugin connections to the motherboard especially power supply connectors.

Jun 17, 2012 | Dell XPS 8300 Desktop

1 Answer

My Dell XPS 420 will not turn on. Power light shows a steady blue color. No diagnostic lights show up.


The RAM maybe faulty.
Try resetting the RAM modules to make sure it is seated correctly in the memory slot.
If the computer still does not boot up then the RAM maybe faulty. Remove the RAM module/s and take them to your friendly computer repair shop and get them tested. If faulty then replace the RAM.

Feb 25, 2012 | Dell XPS 420 PC Desktop

1 Answer

Dell xps 420 computer will no start blinking amber light no diagnostics lights working


If the power light is blinking amber, the computer is receiving electrical power, but an internal power problem might exist.
Ensure that the voltage selection switch is set to match the AC power at your location, if applicable.
Ensure that the processor power cable is securely connected to the system board.
This can be caused bya defective power supply or a defective motherboard. Just to make sure thatnothing else is causing the problem, remove any PCI cards like modem, videocard, sound card, etc... Remove the memory modules and disconnect cables toCD/DVD drives. Look at the USB ports to see if any are damaged.

Jul 25, 2011 | Dell XPS 420 PC Desktop

1 Answer

Blinking amber light xps 420


A Blinking Amber orYellow power button means that the power supply is receiving power from thesource but is unable to properly distribute it to the components. This can becaused by a defective power supply or a defective motherboard. Just to makesure that nothing else is causing the problem, remove any PCI cards like modem,video card, sound card, etc... Remove the memory modules and disconnect cablesto CD/DVD drives. Look at the USB ports to see if any are damaged.

Feb 17, 2011 | Dell XPS 420 PC Desktop

3 Answers

Dell XPS 420 won't boot at all not even a BIOS screen


the bios is not starting ...
check the memory ram if its inserted correcly or
chek the beeps wen cpu starts and

http://kb.iu.edu/data/afzy.html

se if tha link is help full

Apr 29, 2010 | Dell XPS 420 PC Desktop

2 Answers

My Dell XPS 420 will not turn on. Power light


Hey! Nice Computer! ( At least while it was working! Specifications show some high-end hardware parts)

Steady amber light on the Power On light, means a bad power supply.

The Dell XPS 420 uses the standard ATX style of power supply found in 90% of computers out there.
(Personal computers. Not the Cray Supercomputers!)

This is Dell Support, and the User Manual - Removing and Replacing Parts - part of the manual,

http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/parts.htm#wp1466871

From Me:

1) Computer unplugged from power, computer case open. TOUCH the metal frame BEFORE you reach inside.
Your body carries Static electricity.
Static will fry out computer hardware components.
You won't see it, or feel it.

Computer unplugged from power, you are safe.
Touch the metal frame Before reaching inside, your computer is safe.

Should you get up for any reason, walk away, then return, Touch the metal frame again)

You either have a 375 Watt, or a 425 Watt power supply.
I would recommend a power supply with more Wattage, and more Amp's on the 12 Volt power rail.

The Dell XPS 420 comes with an Intel Core2 Duo processor, or an Intel Core2 Extreme processor.

These puppy's can use a lot of power when gamin', or other intense programs are being used.

The Nvidia GeForce 8800 Series of graphics cards offered, use a lot of power when maxed out.

The motherboard with the Intel X38 motherboard chipset, uses a lot of power.

I would recommend a 600 watt power supply for a replacement.

My recommendation would be an OCZ StealthXStream 600W

Why?

1) If the temperature of this PSU is kept under 118 degrees Fahrenheit, the PSU can put out 728.8 Watts reliably. (47.9 degrees Celsuis)

2) It has Four - 12 Volt power rails.
EACH power rail can handle 18 Amps.
That's a total of 72 Amps!

3) It has all the power cables you'll need.

A) 20 + 4-pin ATX motherboard power cable
B) 8-pin 12 Volt power cable (8-pin EPS)
C) 4-pin ATX power cable
D) SATA power cables [ 3 ]
E) Peripheral power cables, (4-pin Molex) [ 6 ]
F) 6-pin PCI power cables. [ 2 ]

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3092557&CatId=106

Not advertising for the above website, nor the PSU manufacturer. Recommendation supported by personal preference, and experience.

Information about the various PC power cables and connectors,

http://www.playtool.com/pages/psuconnectors/connectors.html

Jan 04, 2010 | Dell XPS 420 PC Desktop

1 Answer

My xps 420 pc desktop wont boot. Shut it down last


Try and reset your CMOS and see if it helps.

If you're not sure how, then unplug the power cable from your PC, then take off the side panel, on the motherboard is a set of 2 or 3 pins to Clear the CMOS (reset the BIOS) all boards are different, so there is no set location for the CMOS pins, if you're unsure, just remove the battery from the motherboard for about 30 seconds, then replace it ("+" facing up)

But you need to make sure your PS is not plugged into any external power source while you're doing this or you risk deleting your BIOS

Hope this helps in some way.

Jan 01, 2010 | Dell XPS 420 PC Desktop

1 Answer

Replaced power supply after the old one died and now all i am getting is a solid amber light on motherboard with a green blinking light on usb port


first off double check your power connections to EVERYTHING. sometimes those connections will loosen. if those connections are fine then its a faulty power supply or there isnt enough power going to everything. double check with your motherboards manufactor and see if you have enough power for everything if you dont a bigger power supply is needed

Nov 25, 2009 | Dell XPS 420 PC Desktop

2 Answers

Dell xps 420 desktop want go into windows mode or reboot


Hi,
When it comes to power surges it's hard to say how much of the system was fried. frown.gif It could stop at the power supply, it could stop at the motherboard, or it could go on to other components and fry everything.

The only way to tell what's good is to start testing individual parts in another machine. I don't recommend testing new parts in the damaged system as the new parts could be damaged by parts that are not working correctly in the old system. Also until you isolate the good parts you have no way of knowing if the part is not working because the motherboard is fried, or if it is because of another part that needs to work, for it all to work.

Although there is less of a chance, it is possible that testing damaged parts in another system can screw up that system as well.

If you don't have another computer to test on, you will need to take the system in to a repair shop and have them test the components.

Sorry for the bad news, but if it got past the power supply, chances are at the minimum, the motherboard is fried. frown.gif There is also a good chance you will need a complete new system.

Chris (ziraffa)

PS Always disconnect all electrical components when the power is being worked on. You should test all the TV's and stereos that came off that switch too..

Jan 02, 2009 | Dell XPS 420 PC Desktop

Not finding what you are looking for?
Dell XPS 420  PC Desktop Logo

Related Topics:

214 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18391 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2017 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...