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DELL COMPUTER WOUN'T START

COMPUTER WOUN'T START AFTER DELL POWER SUPPLY REPLACEMENT

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Is you are getting a flashing amber, check the back or front of the system for diagnostic led's if you do not get any then we are going to have to troubleshoot the actual system. Check also so see if you se any flee power(light on the motherboard). First shut off the system and remove the power cord, then press in the power button for about 2-3 seconds to drain any remaining power. Next remove the power and data cables form the hard drive, also unplug everything from the outside of the system including monitor, speakers, mouse, keyboard. Turn on the system and see if the amber ligth is still flashing and if you have an power led's, the power led's are either a (1,2,3,4 or an A,B,C,D). If you are still getting the flashing amber remove the memory, and reseat(unplug and plug back the power connectors 20-22 pin connector and the 4 pin processory power connector), also unplug the chasis fan connect and then check for the flashing amber light. If you are still getting the flashing amber light the you want to replace the power supply. Now depending on the system some optiplex's have strange power supply's that are not the standard box like design. In that case you probably would want to contact the spare parts department from dell 1-800-357-3355
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or if you have a MT chassis you will probably have a regular box type power supply which you can probably find a replacement on line at newegg.com for around $16 for a cheap power supply 300W, and up forn nicer power supplies.
Now if you still don't like my troubleshooting steps you can got to the website (http://support.dell.com/support/topics/global.aspx/support/dsn/en/tree?c=us&l=en&s=gen&treeid=3D170450481B7790E040A68F5B2871BC) and select your system type and then you can go through the troubleshooting steps.

**If you system in still in warranty you can just call and we(dell technichans) will just go through the exact same steps as mentioned above with you and more than likely will be looking at a power supply. There are few cases that sometimes the motherboard has gone bad, but that is usually if we get the flashing amber light to change while troubleshooting.
-Your friend Unnamed Canadian Tech Support Agent

Posted on May 14, 2009

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1. Ensure that the power supply is working
2. If yes then make sure all connections are properly connected
3. If No,you will need to buy a new one

Posted on Jul 16, 2008

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Have a dell tower and want to know how to fix the fan


buy a replacement power supply fan
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buy a replacement power supply - dearer option but power supply may be faulty if fan is not running and you fix two problems however be careful with AC input voltage that it matched the power point voltage. or smoke and broken power supply ! take old power supply to computer shop to ensure correct power supply is purchased.
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Possible cheaper options if fan choked full of dust
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smor4u,

There is no reset or fuse to reset. You may need to get replacement power supply. If the computer is plugged into a power strip or surge protector you can bypass it and plug the system directly into a wall outlet and power up.
Power Supply Light-on the back of the computer.
The light is a Green Light by the power supply.
Power Supply light is lit by a signal in the power supply called Power_Good (PG).
If the Power Supply Light Led is not light up, the power supply is defective.
If you need to replace the power supply you can contact the Dell Spare Parts Department at 1-877-717-3355bsat4ube4gblqiaaaaasuvork5cyii= or click the link below.

Dell Spare Parts

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Dell Social Media and Communities

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First, try and take out the battery and start the computer with just the power adapter. If the power adapter is still blinking, replace the power adapter. If the computer turns on with just the power adapter, replace the battery.

If the battery status light rapidly flashes amber, the battery may be defective. Purchase a replacement battery from Dell.

If the power supply status light flashes, the power supply may be defective. Purchase a replacement power supply.

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My Dell Dimension 2350 won't power on. I've checked cables, power strip, reconnected cable to a known working outlet, and looked under the hood for a breaker. Any other suggestions?


There are four diagnostic lights on the back of the unit. This linke will provide you with what they mean. http://support.dell.com/support/edocs/SYSTEMS/dim2350/advanced.htm#1218079

If all four lights are off, your power supply has most likely died (or the internal fuse is blown). It depends on how far into the computer you are willing to dive. To check the fuse, you'll need to remove the power supply and then remove the cover from the power supply. The fuse will be on the main PCB board inside the power supply. If the fuse is blown, try replacing it (it may blow again). If it blows again after replacing, then the power supply will need replacement. If the fuse is not blown, the power supply is still the likely problem and will need replacement. Be advised that Dell power supplies are special made for Dell cases, so you'll need to be sure that the replacement you get is for your computer or you will have to do some case modifications to get it to fit.

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Plug the computer into a power strip that has an on/off switch. Turn the power strip on. Press the computer power on button to start as normal, but after after one second turn off the power strip switch just long enough for the fans on the computer to slow down, but the amber computer led doesn't turn off and then turn the power strip switch back on. Computer should start and run fine. Computer typically can be shut down for up to 5 minutes and restarted normally--any longer and you have to sue the power strip power switch routine again

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If the computer turns and works (other than the noise) then the wiring is correct. The ATX plug should be keyed so it is almost impossible to hook up incorrectly, and the wiring is for the most part standardized. However, there could be a problem if it is an older computer and your replacement power supply is from a Dell. Dell ATX power supplies, mostly from the PII to PIII era were not wired to the standard ATX pinouts. So, if you put a non-Dell power supply in an older Dell, or if you put an older Dell power supply in a non-Dell PC of any age, your wiring will not be correct. Usually incorrect wiring means either it fries or just doesn't start at all.

Specialized PC's or high end servers may also use non standard power connectors.

If you paid less than $40.00 for the power supply, the problem is most likely just a bad / poorly made power supply. Most of the budget power supplies are extremely cheaply made. They will sometimes have a lot of noise/whine/hum, and often fail quickly. In a lot of cases you will be able to tell the quality of the power supply just by the weight. The cheap ones are usually as light as can be. A good power supply will have some heft to it, as it will have large heatsinks and heavy duty components. If you have a Radio Shack nearby you could pick up a Thermaltake 300 to 450 watt power supply and try it and see if the problem goes away. They have a pretty flexible return policy. If you have a high quality power supply, it could be that you just got a bad one. Try another to confirm. If you try a Thermaltake and it still whines (and never made noise before this problem came up) then it could be that other components in the PC are near failure--possible as a result of your previously failing power supply. My experience though has been that unless the power supply popped (as in literally blew out) the motherboard and other internals aren't usually affected.
I am assuming here that the computer is starting up. If not, make sure that that all the necessary power leads are hooked up. Newer motherboards may have have a 20 or 24 pin main ATX power connector. They may also have a secondary 4-pin 12v connector to power the CPU. If you are mixing a really old or new revision power supply with an opposite age motherboard there may be a problem of not having the appropriate connections available.

Finally, if you are under-powered, you could also experience problems. What is the wattage of your new power supply and what type of computer/CPU? If you are running a 200 watt power supply to power a modern motherboard/CPU you may not be able to supply the power needed. This could result in a stressed power supply, which may make noise, or just power offs or system instability.

I very much recommend spending the extra dollars for a well made power supply. I have replaced many of the $20.00 units. Even if they say they are 350 or 450+ watts, they don't hold up. Often the computer will start random power offs and then the supply will fail completely. A good supply will usually come with a 5 year warranty and will be generally problem free.

Here is a link to a wiring diagram for the ATX plug--just to be complete.
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