Having problems with your Dell Dimension 8400 PC Desktop ?

Dell dimension 8400 fan runs at high speed upon power on

\015 Fan continue to increase speed very loud unable to power off with power switch, have to unplugged\015

Answers :

Check if the capasitors on the motherboard are "swollen" which would mean the motheroard is KAPUT. Check if there is a modem in the PCI slots which often shorts the motherboard (when it has become faulty) ... remove the modem. Try booting again. If not succesfull make sure the POWER SUPPLY workls correctly by replacing it with another working one..... If no joy... there are still one or two other options. Let me know If you still have a problem and I will give you more options to check on
Check the SMPS.
Repair Help & Product Troubleshooting for Dell Dimension 8400 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 :

Dell dimension 8400 fan problems

Power supply needs to be checked. ... Dell Precision T3400 PC Desktop

Dell dimension 8400 fan runs at high speed upon power on. fan continue to increase speed very loud unable to power off with power switch

\015\012Your fan speeds up and slows down in response to temperature inside the computer. More so the CPU.I would suggest getting a can of compressed air made for computerstake it outside, take of the side and blow all t ... Dell Dimension 8400 PC Desktop

Dell dimension 8400 fan runs at high speed upon power on

Check if the capasitors on the motherboard are "swollen" which would mean the motheroard is KAPUT. Check if there is a modem in the PCI slots which often shorts the motherboard (when it has become faulty) ... remove the modem. Try booting again. If n ... Dell Dimension 8400 PC Desktop

Loud motherboard fan on Dell Dimension 9100

To much voltage coming from the motherboard which is why its running loudly, the ic's on the motherboard aren't controlling the amount of voltage coming into the fan which is why its running loudly. I would suggest another motherboard but I know the ... Computer System Cooling


Even thought the fans are running, the power supply or the board has a problem ... Dell Dimension 5150 (DIM515MIN) PC Desktop

CPU fan runs at high speed and won't boot

Check the power supply for problems. \015\012\015\012My computer wouldn't run thru the post up, no beep codes, only the fan running on high. The power switch didn't shut the computer down, it needed to be turned off at the power supply, o ... Dell OptiPlex GX520 PC Desktop

Dell Dimension 3000 CPU Fan does not run

I agree with both of you. As long as you are not experiencing any heat event (shutting down and rebooting) just ignore the error message. If the fan is on and running at a fair speed, you shouldn't have and problems. Now should you start to hav ... Dell Dimension 3000 PC Desktop

Loud Dell desktop

Any fan that is making noise you would need to replace. There is also never a need to use alcohol to clean a fan. Some computer air or a light wipe down will do just fine.If you have any other questions let me know.Thanks,Lee ... Dell Dimension 5150 (DIM515MIN) PC Desktop

How many hard frives can be installed

You can put as many drives as you can fit as long as you have the cables and connection. Usually 4 is the max in a computer, but you can by a SCSI IDE card and add even more. The biggest problem is to make sure that the jumpers are set to slave on ... Dell Dimension 4600 PC Desktop

Toshiba 2435 s255 notebook shutsdown and fan runs on high speed

Overheating problem is caused by faulty fan and or the fan and heat-sink assembly is clogged with dust.\015\012When the CPU overheats, it goes into thermal shutdown and won't boot up again until the CPU has cooled down. If this ... Toshiba Satellite 2435-S255 Notebook

Dell Dimension 5100, Doesn't Boot Up, Display Lights Up "!, 2 3"

2 green lights usually indicate a memory problem, however, when you get 3 lights, RAM is good, but the BIOS is unable to hand off to the operating system.To test this, disconnect your hard drive (both ribbon and power) and connect the mon ... Dell Dimension 5100 (D51L1) PC Desktop

High speed fan

The thermo switch determine how high and how long the fan need to run to obtain the proper temperature, it will be a consern if the fan doesn't run.\015\012as far as the upgrade ... Computer System Cooling

Dell Inspiron 531 (desktop) won?t turn on/boot

You've either got a bad motherboard or a bad processor (I'd lean to the motherboard being bad). I would honestly take this into a computer repair shop and have them check both. ... Dell PC Desktops

Fan in my Dell desktop PC runs at very high speeds from time to time

First check to make sure fan is pulling air out of computer instead of pushing it in,then pull blue wire out of 4-wire fan plug on mobo,then join this wire to black ground wire of 4- wire plug. plug connector back in mobo. power up computer ,problem ... Dell Dimension 4700 PC Desktop

Solid amber power button and fan running

First check your memory, it may be loose which can cause the computer to appear in a "hibernation" state. I recommend taking the memory out and putting it back in. The memory sticks are located on the motherboard. Be sure you are grounded befor ... Dell Dimension C521 PC Desktop

Dell Latitude C510/610 wont turn on

I have more of a suspicion of the CPU fan than the hard drive, right now. If a hard drive goes bad, the system will wake up, go through it's POST (Power On Self Test), and then tell you there's an issue with the hard drive. If the CPU fan goes bad, ... Dell Latitude D600 Notebook

CPU cooling fan

Hi...you can press the F2 key to enter setup...and scroll down until the fan is highlited...hit enter and then F10 to save and exit.This tells the computer its OK.you should have plugged the fan in the same pin port the old fan was in. Usually ... Dell Dimension 8200 PC Desktop

It makes a whiring noise and when i plug the monitor in it wont show the computer

From your brief description of your problem, I believe you're just hearing your harddrive running. Running in an endless loop. [I hope you are plugging in your monitor when the computer is off]How dirty is the inside of your c ... Dell Precision 340 PC Desktop

Fans run at full speed under normal task.


My computor sounds like a fan is on high - Dell Dimension E510 Dual Core 2.8 Ghz (847403171179) PC Desktop

You can sometimes control the speed of the fan through your BIOS. However the best way without too much hassle is to use AlmicoSpeedfan.Install it ... Dell Dimension E510 Dual Core 2.8 Ghz (847403171179) PC Desktop

My Toshiba Satellite A75-s206 shuts down by itself. When I feel the bottom it's burning hot. Could this be my fan not working properly? Please help.

I own one and just came across the best solution.  I'm assuming by shuts off, you mean it just completely blinks out in an instant without warning - this is the processor getting too hot and shutting off to protect itself.  First you will m ... Toshiba Satellite A75-S206 Notebook

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

2500 dell inspiron fails to boot when new fan comes on

You are drawing too much current from the power supply with the current hungry fan.Try using a different fan that draws less power on start up. Or use a limiter to lower the input voltage draw on start up. These are usually found in fan speed control ... Dell (6F858) Cooling Fan

Zt desktop rear fan is very noisy upon startup. usually will quiet down after a while or with a smack. Have already cleaned all fans. Sound appears to come from the fan in the very back.

Depends on how much use the fan has had in its life, ive got a new pc and the 120mm fan supplied in the rear is not the top of the range and is already making a noise after only a few months of service life. just bite the bullet and buy a new one, yo ... PC Desktops

Computer keeps shutting down.

Do the fan's spin when you power the PC on? All of the fans should spin up for at least a second upon initial boot. The CPU fan and video fan (if you have an external card) will spin the entire time the PC is on and vary in speed depending on tempe ... 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: 0.9884 seconds