The two fans spins fast and makes a noise like an engine running at a high rpm when the computer is executing a task. For instance, when it opens ie, updates virus scan software, burn dvd etc. Please help?
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Re: Power supply and CPU fans spin fast
There may be no problem here. Has it always done this? Usually when executing some major tasks the CPU gets hotter and sends a signal that it requires the fans to work harder to keep from overheating. This may be normal.
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Usually there is a fan on the CPU heatsink and a fan in the power supply. Open the case and turn on the computer and use a small timber stick and poke it into the CPU fan to stop it spinning and if the noise stops then this fan needs replacing. If it is OK the the fan in the power supply is faulty. I recommend you replace the power supply because there are dangerous voltages inside this power supply.
Yes, open the side cover and determine where the noise is coming from - Harddrive, fans, DVD/CD player, etc..
If it's the harddrive, start backing up your important data asap before it goes out completely. If it's a fan, power down the computer and clean the fan. If it's t DVD/CD drive, replace the drive.
Most fans are "temperature-sensitive" -- if it is sensed that your computer is close to over-heating, the fan will run at full speed, very noisily, to try to cool it.
So, shut it down, and disconnect the AC power.
Remove the side-panel.
Purchase a can of compressed-air.
Give the computer a "blow-job", to remove excess dust,
since the layer of dust is acting like a blanket,
keeping heat inside your computer.
this sounds like the hard drives working extras hard. can be caused by malware and viruses as well as anti virus software and realtime protection. the computer might also have a bad bearing in one of the computers fans when you shutdown and power backup listen to the back by the power supply. see if its coming from their or from the cpu cooler. replace as necessary.
have one very similar, they only have a fan in
the power supply, and a small, small fan on the CPU. If it's the fan in
the power supply making the noise, some people would say replace the
whole unit, some would say replace the fan. I would replace the fan,
but if you don't want to take the risk of getting electrocuted, that's
probably a great idea. A power supply can be found somewhat cheaply,
but one that fits those cases might not be quite as easy.
If you changed out the power supply then the only other device that could be making that noise is your CPU cooling fan. To be sure, open the case and disconnect the CPU cooling fan plug from the motherbrd (MAKE SURE POWER IS OFF) and see if the noise stops. Don’t worry about the “Fan Failure Error” when you turn on the computer. Just hit F1 to continue. Don’t leave the computer running without the fan plugged in longer then necessary. After tying this procedure, please contact me for further diagnosis.
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
when you say "the fan makes a noise like its getting ready to spin", which fan...power supply's or cpu? if you answer power supply, then the POWER OK signal is not returning to power supply and it then quickly shuts down to prevent further damage. double check a firm connection to mother board.
If you answer CPU, then it becomes far more complicated. Try re-seating the memory chips.