Having problems with your Dell Dimension 3100 PC Desktop ?

Dimension 3100 Won't POST, getting amber flashing amber light at front panel and on the mother board getting steady light near the cmos battery note under the light says cr3h1 re-seated cpu and cards, fans not spinning think its the power supply


Answers :

I concur with your diagnoses.

Weak power supply due to a weak, or failed, voltage power rail.

There are three main voltage power rails for your Dell Dimension 3100 power supply.

1.The 3.3 Volt rail
2.The 5 Volt rail
3.The 12 Volt rail

Newer computer power supply's are doing away with the 3.3 Volt rail.
Your power supply has,

16 Amps on the 3.3 Volt rail,
21 Amps on the 5 Volt rail, and
21 Amps on the 12 Volt rail.

These are the main power voltage rails.
Voltage times Amperage = Wattage.
You have a power supply, that is rated at a maximum output of 400 Watts.

1) ALL the lights use less than 1 Watt.
2) EACH fan uses 2 to 3 Watts
3) A typical processor uses 55 to 125 Watts.

(A typical Intel Pentium 4 HT processor, Model 640, (3.2GHz), uses a maximum of 84 Watts,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#Prescott_2M_.2890.C2.A0nm.29

With a weak, or failed voltage power rail you don't have enough power to turn on the processor.
No processor running there is nothing to run the operating system. (Windows XP is an example of an O/S)

The harddrive just sits there, and spins, or will spin a few times, and stop.

What causes this?
1) Cheap quality power supply, (SMPS), installed by computer manufacturer. Cheap components are used in the power supply. (Electrolytic Capacitors, gauge of wiring, rectifier bridge, and so on)

2) Inside of computer, and power supply hasn't been cleaned on a regular basis.
Causes havoc inside the computer.

The processor fan builds up with dust, dirt, hair, etc, and the cooling capacity drops tremendously. Eventually the processor turns off. (BIOS turns it off)
It's a Fail safe feature that is built-in, to keep the processor from burning up.

Before it get's to the stage of overheating, and turning off, it calls for more power from the power supply.
The power supply works overtime to keep up.

When the inside of a power supply, and it's cooling fan are clogged with the above mentioned gunk, the cooling capacity of the power supply also drops tremendously.

The heatsink's inside the power supply cannot get rid of the heat. The fins are clogged, and air cannot rush through them to disperse the heat.

When the blades of the fan, and it's center hub become clogged, the cooling capacity drops due to not enough air is passed.

Heat = Wasted Energy, and the power supply strains to keep up. Eventually components inside the power supply start to fail, or fail.
(Electrolytic Capacitors are usually the first to go. They are the weakest link)

Questions?
Repair Help & Product Troubleshooting for Dell Dimension 3100 PC Desktop

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Dimension 3100 Won't POST, getting amber flashing amber light at front panel and on the mother board getting steady light near the cmos battery note under the light says cr3h1 re-seated cpu and cards, fans not spinning think its the power supply


I concur with your diagnoses.Weak power supply due to a weak, or failed, voltage power rail.There are three main voltage power rails for your Dell Dimension 3100 power supply. 1.The 3.3 Volt rail2.The 5 Volt ... Dell Dimension 3100 PC Desktop

I have a Boot Problem with my INTEL P4 3.0Ghz. 800Mhz FSB,1M L2 Cache, Socket 478 CPU


I have experienced something similar with my new Core2Duo processor and a fairly new Socket 775 processor. Troubleshooting it led me to believe the CPU simply wasn't compatible with the motherboard. \015\012\015\012Although it's a shot in the dark, I ... Intel P4 Prescott CPU 2.8A Ghz W/1MB CACHE 533FSB (CPUP428A1M)

Monitor not coming on - Packard Bell Easynote R4650


It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on. Note: It is very import ... HP Pavilion a305w (DM181AR) PC Desktop

Dell latitude d500 had a power socket problem, but now resolved pc will not boot-up, drive spins-up, then nothing, completely dead display i think most likely scenario is mobo is fried, but open to suggestions how tio get this working again


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... Dell Latitude D500 Notebook

I have power out of adapter but laptop is completely dead; no lights come on at all.


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... Toshiba Satellite A45-S150 Notebook

My hp compaq nc6400 doesn't turn on. the green


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... HP Compaq nc6400 Notebook

My acer travel mate 5710 just blipped and closed down. NOw will not even switch on. any advice how to fix? The green power light does show for one half second when I press the button but does not function to 'on' mode.


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... PC Laptops

My Toshiba Satellite 2415-S205 is dead as door nail, no lights, etc. I checked power supply, power jack and connection on board, all is OK. Now what, send into the shop for repair? Ted


Here are some suggestions I compiled, some you have done, thought I would throw it out there for you...\015\012\015\012 ... Toshiba Satellite 2415-S205 Notebook

Acer will not boot up even with it being plugged in, no lights, noise, nothing


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... Acer Aspire 5100 Notebook

Cant get it to turn on/ panasonic CF-51 toughbook laptop.


Here are some troubleshooting hints, see if these will work for you. It is hard to knnow what to do in these situations because there is no way of telling what key combinations etc. were hit.\015\012\015\012 ... Panasonic Toughbook CF-51 Notebook

Does not power up


It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on. Note: It is very import ... IBM ThinkPad T22 2647 Notebook

My on button just blinks on and off but when I push it to turn it on..nothing happens..its like it isnt getting any connection


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... Acer Aspire 5520-5908 Notebook

Whilst in use went completly dead canot resart


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... HP Pavilion dv6000z Notebook

My loptop is an Averatec 7100. How can I test the motherboard? I took it to a computer repair shop and they said is the motherboard, I want to know how can I test it on my own.


This is more of a system diagnosis that an actual motherboard testing procedure, but since all components attach to the motherboard in one way or another it could count as a prcess of elimination......\015\012\015\012 ... PC Desktops

The screen is not going on all that shows up is a black screen with a white slash mark flasing


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... Dell Inspiron 2200 Notebook

No' it's not powering up at all now, can you help' after changinng ac-adapter & battery


Laptop is dead. How to troubleshoot the problem.\015\012In this post I’ll explain h ... PC Laptops

Trubleshoot Motherboard what is mother board prob and how can find n fix them....


More than 70% of all computer problems are related to cabling and connections. Ensure all cables are connected and connected firmly. IDE and floppy ribbon cables and power cables can often go loose. Ensure microprocessor, memory modules, and adapters ... PC Desktops

Acer t135 pc desktop will not get to bios page or startup at all


1 Did you unplug the PC prior to opening it, and turn off the switch on the back?\015\0122 Did you wear a wrist strap or ground yourself to bare metal on the case before you touched it each time?\015\0123 Did you remove the motherboard fr ... Acer Aspire T135 PC Desktop

I get nothing on the monitor when it starts up!!!!


I assume you have had the side panel off to watch the cpu fan spin up? if it does spin up and you get no bios beeps, then the fault is with the motherboard or CPU, most probably the motherboard. Problem sounds like capacitors blown or leaking ( have ... HP Compaq Presario SR2170NX (RK549AA#ABA) PC Desktop

Xion II Silver ATX Mid-Tower Case


There can be several causes for your problem.\015\012So I will walk you through checking the most likely causes.\015\012\015\012If you have the manual for your Motherboard it will be useful for reference purposes, otherwise you can ... XION II Mercury (XON102) ATX Mid-Tower Case

PC Problem, p4 processor, intel D850GB . I think its the cpu


Yes you do buy a new processor but here a tip to work it properly because its old enough your motherboard, when you buy a new processor, bring your CPU to the Computer Center, the company you buy a new processor, let them put it in your CPU. If ... Computer Processors

Monitor reads: PC entering power saving mode then shuts off;PC on


First do not take the hard drive out and put it in another computer. It is configured to run in the computer it's in.\015\012\015\012Next, you probably did have a power surge either from your power supply or the power in your home. It s ... HP Pavilion a810n (PP164AA) PC Desktop

Ma acer aspire 5738z does not start at all. the power on led nd the on/off buton light glows but the scree remains black. when i last left the comp i put it to sleep nd it went 2 sleep after installing new updates. now it doesnt respond after 5 hrs.only led light of power nd on off switch shows up..wat 2 do?


When you plug the DC power adapter and press on the power button, the laptop starts making normal noises, the LEDs work properly but noting appears on the screen. The laptop will not start.\015\012First of all, take a ... Acer Aspire 5735 Notebook

HP dv6000 Lights up but that's it.


Re : When i press the power button, the lights all light up, the cd rom\015\012drive spins for a second and that's it. No fan, No Post, Blank Screen.\015\012After a few seconds, it shuts off and then turns back on.That is generic hardware ... HP Pavilion dv6000t Notebook

I was just given a Motherboard with a P4 2.56Ghz processor, so I put into a case connected the power supply & my monitor cable, my cdrw drive and turned it on. I get no beeps and no display on the monitor. The power supply fan spins up, my cdrw drive indicator light is on but the fan plugged intio the board doesn't spin and the fan atop the Heatsink assembly doesn't spin. When I hold the power button in to shut it down then the fan atop the heatsink spins real quick. what is the likely problem d


Hope u r a professional, as u r aware of hardware hazards n minds to open up n dismantle the system..however, plz do check the following as in order:..the Hardware part:..1)a)\015\012in power-on mode, open/unplug ... PC Desktops
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.electronic-servicing.com || Terms of Use || Contact || Privacy Policy
Load time: 1.1700 seconds