SOURCE: Dell XPS 400 Card Cage Fan Failure
Hi,
Many PC motherboards (most) monitor important internal parameters, such as temperature, power supply voltages and fan speeds. This is typically monitored through the system BIOS.
If any of these parameters fall outside of their predetermined limits, the system BIOS will issue a warning message and take evasive action to protect your computer from permanent damage:
1) Slow down the CPU
2) Put the CPU to Sleep
3) Refuse to boot
...
...
Etc...
In your case one of the system critical cooling fans has failed,
and the system BIOS is telling you to fix !!!
There are several cooling fans in a modern computer, every computer is different, but common locations for fans include:
0) Power supply
1) CPU chip
2) Video Chips
3) Some MB chip-sets
4) Device cages, such as the Hard-Drive/ CD/DVD cage
5) Power supply
6) Rear chassis
7) Side cover
etc....
Some of these fans plug into dedicated connectors in the mother board, others connect to the main power supply harness. Some are monitored by the mother-board, others are not.
On three wire fans, the mother-board can monitor the fan's RPM by monitoring a built-in tachometer, either voltage or frequency.
On two wire fans the mother-board can monitor the fan current,
or the fan noise frequency.
In your case, there is a malfunctioning fan within the I/O card container cage, which could be the result of:
1) Bad or loose fan connector
2) Defective fan = burned out or mechanically seized
3) Defective mother-board circuit.
To fix the problem, open the case and check if all the fans are spinning. If not, give them a spin by hand to see if they CAN move. Wiggle all connectors. Replace defective fans.
Note that some of the fans may be regulated by temperature, and spin only when the machine gets hot. This is done to reduce noise and save power. Most fans are quite junky, and burn out in a year or so. This is not uncommon.
Hope this hepls
Martin
SOURCE: Power is shutting down with orange light flashing on t
Hi, This is na very common problem with these Dell machines. I have found one of two things are the cause of this.
1. Your memory warms up once system is on for a while and fails to make proper contact on all pins, focing system shut down (after which only a power disconnect will restart system).
Solution. Carefully remove memory moduls and wipe copper contacts gently with a damp cloth after which you can replace the modules firmly. make sure power to the system is uplugged during the entire peocedure and give the system 5 minutes after putting modules back (just in case moisture from wiping remains).
2. Your PSU (main power supply) is failing. Replace PSU (cost around $50 at local IT shop).
cheers
SOURCE: Dell XPS400 No Start!!
If you fan isn't turning like it should, it is definitely a power supply issue. Go out and purchase a power supply with 250-300 watts...thats a good standard wattage!!
SOURCE: The power light on my Dell XPS 8000 keeps flashing
It's not the light.Your CPU might be already dusty. I also had an experience that was just like you. I just cleaned up my CPU and the noise was gone.
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