WatchGuard DNSWatch reduces malware infections by detecting and blocking malicious DNS requests, improving your ability to protect employees from phishing attacks. Learn more about our newest service included in Total Security Suite today!
High pitched squeal from PC
I hear a squeal from PC when cover is off
If it's not the fans is it cause for concern ?
If it's not the fans is it cause for concern ?
Asked:
4
4-
3
- +4
6 Solutions
Or a fan in the PSU or graphics card. Might be worth checking to see if a cable is fouling a fan suddenly but otherwise pretty much as above. The only other moving part is going to be HDD platters and that IS serious!
Fans can be stopped briefly by sticking a nylon cable tie into the blades. Don't do this longer than a few seconds. Some fans, particularly the CPU fan, are monitored by the motherboard. Stopping those fans may cause the motherboard to "protectively" shut the system down without notice.
Maybe if you could record the noise and attach the recording we may be able to identify what causes it.
Have you thought about turning off the overspeed protection in the bios menu?
To access the bios menu on Win10, for example
If the noise persists, it may be from a bad capacitor (if the machine is new, maybe get it repaired under warranty?).
Also, if it isn't the bios (turn the overspeed protection back on), and use a can o' compressed air and blow all the dust bunniez out of the case, the fans, the cpu fan, etc etc. Dust is not your friend.
To access the bios menu on Win10, for example
If the noise persists, it may be from a bad capacitor (if the machine is new, maybe get it repaired under warranty?).
Also, if it isn't the bios (turn the overspeed protection back on), and use a can o' compressed air and blow all the dust bunniez out of the case, the fans, the cpu fan, etc etc. Dust is not your friend.
From experience, noises can be extremely difficult to diagnose where they are coming from, and what is causing them.
As has already been stated, it can be;
1) Fans (very common)
2) Electrical noise coming from failing components
3) Hard disk drive (common, but the most worrying) (get stuff backed up!!)
What I have done in the past, as funny as it might seem, is use a stethoscope and touch various parts of the case and components (PSU, hard drives, cdrom, floppy etc), taking care NOT TO TOUCH ANY LIVE electrical components (if you're not sure about this, best not to attempt this method).
As has already been suggested, perhaps record the noise and upload?
As has already been stated, it can be;
1) Fans (very common)
2) Electrical noise coming from failing components
3) Hard disk drive (common, but the most worrying) (get stuff backed up!!)
What I have done in the past, as funny as it might seem, is use a stethoscope and touch various parts of the case and components (PSU, hard drives, cdrom, floppy etc), taking care NOT TO TOUCH ANY LIVE electrical components (if you're not sure about this, best not to attempt this method).
As has already been suggested, perhaps record the noise and upload?
IT-Expert raises an excellent point. A mechanic's stethoscope is a useful thing to have in any technician's kit.
Or just attach a sample of the noise. Often that will be enough for us to say, Ahh, I recognize it, it's the ethernet interface...
Ahh, I recognize it, it's the ethernet interface...
Is that the 10BaseT one that sounds like a '58 Chevy shredding the clutch facing, or is that the 10Base100 one that sounds like the mournful wail of the Numidian turnip?
i have also seen cases where the noise came from vibrating coils (loose windings)
they can be in the PS, or on the mobo
i use a screwdriver with a long stem, and put it on the non- conductive surface of the part i wan t to check - while holding the grip to my ear - usually that's enough for locating it roughly
they can be in the PS, or on the mobo
i use a screwdriver with a long stem, and put it on the non- conductive surface of the part i wan t to check - while holding the grip to my ear - usually that's enough for locating it roughly
Something else that is also worth bearing in mind, is that people can often describe noises in different ways (or even find it difficult to describe certain noises), which is why the suggestion of recording and uploading the noise may be a good idea.
Also, whether you use a stethoscope, long screwdriver or whatever, it is just another method of trying to locate the source of the noise.
Also, whether you use a stethoscope, long screwdriver or whatever, it is just another method of trying to locate the source of the noise.
Delete the Question. Without a sample of how it sounds there is no hope of us identifying the source.
I am NOT saying it's impossible, but I've not yet come across a scenario where TWO fans in a computer system were causing noises at the same time?
You say that you replaced the processor fan AND 'case' fan? Of course, it IS good news that you've resolved the issue, however how did you actually discover that it was those two fans causing the problem? And what do you mean by 'case' fan? A standalone fan in the case somewhere, that wasn't actually cooling any particular component?
You say that you replaced the processor fan AND 'case' fan? Of course, it IS good news that you've resolved the issue, however how did you actually discover that it was those two fans causing the problem? And what do you mean by 'case' fan? A standalone fan in the case somewhere, that wasn't actually cooling any particular component?
Question has a verified solution.
Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.
Have a better answer? Share it in a comment.
Join & Write a Comment Already a member? Login.
Featured Post
WatchGuard’s Threat Lab is a group of dedicated threat researchers committed to helping you stay ahead of the bad guys by providing in-depth analysis of the top security threats to your network. Check out this quarters report on the threats that shook the industry in Q4 2017.
Tackle projects and never again get stuck behind a technical roadblock.
Join Now
a) Fans. Fan noise is often discontinuous, "it comes and it goes", shifting from grumbling to high-pitched squealing and back again. Fans can be opened and re-lubricated, but it's not worth the effort; the bearings of a squealing fan are damaged and the problem will be back shortly. Replace the fan(s).
b) The power supply. This noise is continuous and high pitched. It's caused by delamination in the output transformer. Replace the power supply immediately, because this problem can cause the power supply to overheat and catch fire.