Very, VERY, high pitched sound coming from my computer

[Leon.]

A high pitched sound that is not directly present is caused usually by one of tha fans.

There are fans in:
- Processor - this will cause temperatures to rise
- GPU - will auso cause temperatures to rise
- Power supply - will do nothing.

Probable cause : dust or wear.

Solution : first try to clean the PC. Do not use water  :devroll:

To test it take a pen and for a moment stick it in the fan. If the sound disappears for a short time, probably its wear. Live with it until it breaks, or replace.

I do monthly cleanings, as recommended by my comrades IRL.
@IcyAero
At random times, any time. This includes idling, with nothing open except for the normal startup processes (explorer.exe, lsass, svchost...etc...).

[Devin]

To test it take a pen and for a moment stick it in the fan. If the sound disappears for a short time, probably its wear. Live with it until it breaks, or replace.

Sorry but I will have to advise against doing so, putting a Pen into a moving CPU fan which is spinning at around 2800RPM upto 3500RPM can and more than likely will cause the blade to break, crack or just chip the blade which will cause an imballance which could damage other system parts.

[Bilbo]

I do monthly cleanings, as recommended by my comrades IRL.
@IcyAero
At random times, any time. This includes idling, with nothing open except for the normal startup processes (explorer.exe, lsass, svchost...etc...).

In that case it's not your GPU problem. :razz: I've heard and in fact, I have one card myself from nVidia which makes high pitched noise when starting games which use higher frequency or generate an awful lot of FPS at the start (over 500). It's caused by one of the power coils tuning up for that special resonance frequency (which all metals have) which makes it vibrate and therefore create a high pitched noise. But in your case, the problem is not that.

[Altair_Carter]

Try formatting your HDD.

[Gandalf]

Sorry but I will have to advise against doing so, putting a Pen into a moving CPU fan which is spinning at around 2800RPM upto 3500RPM can and more than likely will cause the blade to break, crack or just chip the blade which will cause an imballance which could damage other system parts.

Usually they can take it. At least the ols-school ones.  :razz: