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high pitch sound from system unit

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by shamux1

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Recently my system-unit emits a very annoying highpitched sound.what could be the cause and the significants of this? My computer is about three years old has a 650 k7 processor and a 10gb 5400rpm ultra ATA hard-drive.It sounds like a spinning sound.

19 replies

by jacook

Remove the cover and try to pin point the sound. Most of the time it's just a cooling fan that needs cleaned. If it is the HDD, thats a good bet you will be buying a new one(HDD).

by otl

A. Does anybody else hear it ?
B. Definitely comes from the BOX, not the monitor ?

If only you can hear it then something is wrong start checking where the problem is comming from.

If all can hear it then you have a problem that may take yoursystem down, see answer #1 for possible problems/solutions.

BTW - harddrives usually do not give an indication they are going out to lunch, permently, they just leave you in the lurch !

by otl

A. Does anybody else hear it ?
B. Definitely comes from the BOX, not the monitor ?

If only you can hear it then something is wrong start checking where the problem is comming from.

If all can hear it then you have a problem that may take yoursystem down, see answer #1 for possible problems/solutions.

BTW - harddrives usually do not give an indication they are going out to lunch, permently, they just leave you in the lurch !

by cg it

Ya have to feed the squirrels on a regular basis or they get really cranky!

by cg it

Could be the bearings in a cooling fan are going out[but then that would be a squeeking noise] or a fan going really really fast, [some of those 6800 rpm 60 mm fans are real screamers and LOUD! [if you upgraded your cpu fan, that could be it. [As the other answerer said, hard drives usually just die on you without warning.]

Other than that, check the squirrels.

by cg it

As in answers #2 & #3, Does anyone else hear it? If no, humm, [maybe rest the brain cells and orbs for a while and come back].

by rcom

Don't let this go unchecked if it's the CPU fan and if it stops turning that K7 will be burnt instantly and be a goner. Also it may be from the fan in the power supply. Both are inexpensive and easy to replacement. Remember to touch the bare metal of the frame before touching any of the conponents in the computer this will illiminate any staic charge you might have. If it's really high pitched then it may be from the monitor. Turn the monitor off with the PC running, is the sound still there?

by dmiles

Open your case and listen to the Power Supply,it will give off high ppitched sound when going bad

by opatzg9

You've got a good number of answers here and the locating is all up to you. If its in the PC there are a couple other places to listen as well like the video card and sound card can both give off high pitched wines, See if you can narrow it down, the hard drive is normally not a problem unless its a high speed hard drive 7200/10000 then you'l catch a high pitched whining depending on manufacturer and enclosure they use, normally not enough to annoy you. Normally this would be a fan issue, abnother thing to check out is make sure nothing is rubbing against your fans like the drive ribbon cable.
Good Luck

by stuart_at_oz

If the sound is coming from the Monitor, then it's a bad sign - I believe this is often caused by loose (microscopically) windings in the power transformer. If this is the case, you are probably better to have a spare on standby for when it finallygoes.

I would imagine you could get a similar thing in the PC power supply too, but I haven't seen any like that.

Stuart

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