Dell, dimensions, 2400 will not power up

Posted on 2008-11-07
Medium Priority
Last Modified: 2013-12-11
The computer will not power up. There is a green LED on the motherboard, but nothing happens when I hit the power button.
Question by:LostinBoston

Accepted Solution

kdtresh earned 1500 total points
ID: 22909494
Unplug the power cable for a minute and try it again. If you don't even get a spinning fan, your power supply is probably toast.

Expert Comment

ID: 22909499
It could be the motherboard as well, Dell support should be able to help you diagnose it.

Expert Comment

ID: 22909506
The first thing I would do is unplug the computer and then unplug all ide and floppy cables from the motherboard, and remove any unnessary cards.  Leave only the video card if possible.  
Then plug it back in, and try to turn it on.

If you still don't get any lights, then you have at least eliminated these devices as being the problem.
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.


Expert Comment

ID: 22909516
Hi LostinBoston,

There is one more thing you can check on the power supply itself: you should see a red 120/240 switch (look near the power plug). It should be set for 120 (the switch may also read 110/220). Only change this setting after removing the AC cord from the power supply!

With the incorrect AC supply voltage set, the power supply will look "alive" but will not operate.

Otherwise, kdtresh's comment on a dead power supply seems very likely...


LVL 19

Expert Comment

by:Rob Hutchinson
ID: 22909527
Some of the Dell desktop computers had bad mobo's, you can check this out if you look at the mobo capacitors with the little stamped "X" on the top. If the capacitor looks like it's tryin to explode( expanded) or is leaking, Dell needs to send you a replacment mobo.

If you unplug it for a few secs, it should boot backup, but the problem will continue to get worse until you replace the mobo.

Expert Comment

ID: 22910584
Good call, wired, I had forgotten about all the Dell capacitor issues. Take a look at http://badcaps.net and see if any of your capacitors are bloated and/or leaking.

It still sounds like a power supply or motherboard issue, but following the other advice given would eliminate peripherals as the culprit. Unplug and unhook all devices except for a stick of ram and the video card (if you have one) and see if you can get it to show the Dell logo. If you see the logo on the screen, shut it down and add one piece at a time until it breaks.

It also probably wouldn't hurt to call Dell support, there may be specific info about your unit that only they would know about.
LVL 93

Expert Comment

ID: 22911398
here an example of a gx270 with bad caps (i had 2 of them)
LVL 44

Expert Comment

ID: 22941774
Also be aware if you do replace the power supply, some Dells used odd motherboard pinouts different from 'standard', even though the used the standard ATX connectors.

If it has a 20-pin motherboard connector, compare the wire colors to the chart at http://www.informit.com/articles/article.aspx?p=339053 to see if your has the Dell faux ATX pinout or the true ATX standard pinout. I would say test the voltages, but if the supply is bad they might not match up anyway.
LVL 44

Expert Comment

ID: 22941785
> even though the used the standard

even though they used the standard

Featured Post


Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Issue: Unstable cursor in Windows XP and Windows runs extremely slow in that any click will bring up the Hour glass (sometimes for several seconds before giving you what you want) . Troubleshooting Process and the FINAL FIX: This issue see…
More and more people are using the enhanced small form-factor pluggable (SFP+) tranceivers, and speed is of utmost importance. Testing of speeds are critical to ensure that the devices will meet the speed requirements. There are some testing challen…
This Micro Tutorial will teach you how to add a cinematic look to any film or video out there. There are very few simple steps that you will follow to do so. This will be demonstrated using Adobe Premiere Pro CS6.
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Suggested Courses

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question