Computer makes USB unplugged noise when I run the microwave/heater

The only thing that can cause that is a poor connection to a USB port or USB device.

Have you, or is it possible someone else who had access to this computer...
- dropped it, or dropped anything on it, or otherwise exposed it to a physical jolt ?
- spilled liquid on it, or sprayed it with liquid, or exposed it to liquid such as rain ?

Since the USB ports last worked properly all the time, has there been a power failure event that happened while the AC adapter was plugged in ?

Those things are the most frequent reasons something inside the laptop has been damaged.

If you have an external hub plugged into a USB port, broken wires inside it's cord could cause your problem.

A physically damaged built in USB port could cause your problem.

Your touchpad, and your memory card reader if you have a built in one are often both connected to a USB header inside the case - a damaged or loose connection to that header could cause your...

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A louder-than-usual fan in your computer, or one that's making strange noises, isn't something to ignore. These sounds are usually an indication that a fan is not working properly - a potentially serious problem.

Fans located throughout the inside of the computer help remove the large amount of heat generated by the CPU, graphics card, power supply, and other hardware on your computer. When heat builds up inside the computer, those parts heat up until they quit working...

often permanently.

Below are three distinct strategies for solving a noisy fan problem, all of which are worth investing some time and effort into. That said, cleaning the fans should be the priority if you're looking for the most likely solution.

Important: A lot of other "computer fan troubleshooting" articles out there recommend software tools that force your computer's fans to slow down, but I never recommend those. There's usually a very good reason for a fan to be running fast or...

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Our microwave was running intermittently when it wasn't even turned on. Sometimes it would just continue running and we would hear the hum after the timer had ended. Other times it would start humming out of the blue without us using it. The light would be off and the rotating plate wouldn't move, but you could hear it running as long as the door was shut and anything left inside would continue to cook.

Found out this can be caused by the door switch not working correctly. By accessing the switch behind the panel and manually rotating it forward and then back, the problem seems to be fixed.

It started doing it again about a month after I did this. Easy enough to do again though so I gave it another shot and it's been working for a couple of months now. For now it's better then having to buy a new microwave I guess. Hope it helps someone...

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If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.

Enter your model number to see parts for your microwave.

Help me find my model number

Exhaust Fan Motor

If the microwave is loud when running the fan motor might be

Enter your model number to see parts for your microwave.

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Stirrer Motor

If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer...

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On Mon, 31 Dec 2012 09:53:48 +0000, katejaney wrote:

Quite often my new computer running on windows 8; It is a Samsung ATIV Smart PC makes these chiming noises, in fact it is doing it as I type this note. When it is chiming I am prevented from typing. Does anyone know what is causing this? Its seems very frequent and is annoying.
I don't know if it is Samsung issue or a Windows issue, I have never come across it before with previous computers so thought it may have something to do with Windows 8 ??

Go to Control Panel | Sound, and on the Sounds tab, go to each Program
Event in turn and click the Test button to listen to it. You will soon
find what event makes that sound.


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(I typing this response in your original question but, you deleted it before I could post it!)

I'm not sure what went wrong but I know how to fix it.

Quick fix (if you want to disable the sound, but won't play when you plug a device in)

Go to Start>Control Panel>Hardware and Sound. Under the "Sound" category select "Change system sounds." On the new window scroll to "Device Connect" and "Device Disconnect" and change them to "(None)" in the expanded list left of the "Test" button. Then click "Ok" to apply the changes.

Long fix (if you want to fix the sound and have it play when you plug a device in)

Go to Start>Control Panel>System Security. Under the "System" category click and open Device Manager. In Device Manger select and expand "Sound, video and game controllers" Find the driver for your speaker then disable it reboot your computer, then enable it and reboot again. Test to see if the sound works correctly. If the sound still persists then uninstall...

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Recently, my computer has been making a very loud grinding noise when I boot from cold. It seems to take forever to stop and everything goes very slow during this time. What is this and how can I correct whatever is wrong?

There are two possibilities that come to mind. One is something that you should deal with, but it’s nothing to really panic over.

The other is definitely worth panicking about. And in fact, given that your machine is running slowly while this is happening, it might be time to start panicking right now.

Problem #1: Fan issues

The problem that you want is a fan issue.

Many computers will run all the fans at full speed for a few seconds. They do this at start up to make sure that the fans work and to dislodge any dust or dirt that may have accumulated that a low speed wouldn’t just blow out of the way. If there is something partially obstructing the fan, the blades could be hitting it and that could easily sound like...

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If your microwave is making a loud humming noise, first check to see if it still heats efficiently. Often, the humming noise is associated with a microwave malfunction. The following tips will help you troubleshoot the problem in either situation.

Replacing your Microwave:

If your microwave is old, it may be more affordable and efficient on your time to purchase a new one rather than trying to repair the existing one. You can purchase a new microwave from Amazon and have it shipped overnight starting at $59.50.

Microwave still heats:

It is likely that grease or food debris is causing the humming sound. Sometimes grease or food becomes stuck behind the stirrer/waveguide cover and creates the noise. Make sure to clean behind the cover to clear away any debris.

Microwave does not heat:

If the microwave does not heat, the humming is likely caused by a malfunction of one of three parts: the power diode, high voltage capacitor, or...

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I recently made a big hardware upgrade to my computer and I have noticed that whenever I move my mouse while in windows (Logitech G9x), I can hear a faint "frequency" sound coming from inside the case.Putting my ear inside the case, this sound seems to be coming from the PSU. I have done some googling and people have reported that disabling power saving options and turning off things like C1E in the bios has fixed the issue for them, but I have tried those things and nothing has worked.

I don't have another wired mouse, but I did plug in an older wireless mouse I had lying around and I couldn't hear the noise anymore. I have tried turning off any power saving modes and disabling suggested things in the bios, tried all the of USB ports, disabled onboard sound (some people suggested it might be interference with the onboard sound card), unplugged speakers altogether, and nothing has stopped the noise. Some people have also said that Corsair PSU's just make this noise, but I never...

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Several people here have answered correctly that it's very probably the power supply. I would not advise using the paperclip trick unless you have much experience already working around exposed wires. (That's a safety disclaimer) You can buy a tester specifically for testing power supplys or just borrow another power supply from someone and test it in your system. Make sure it's rated adequately for your hardware as was mentioned already.

Before any of that I would recheck all connections & the mounting of the motherboard. I've seen a screw get caught between the case & MB. It got hot enough short circuiting the MB that it melted some solder it was touching and had fixed itself in place. So don't just check in the obvious places. Really scrutinize every nook and cranny.

Also if it's not the power supply remember the more complex a system or problem the harder it is to solve. So, strip it to the basics.

It needs a power supply, CPU & fan, (& RAM depending on how current...

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I have an external USB hard drive of 500GB. I can't tell what model it is exactly, as nothing specific is written on it and I don't have the box anymore. I use it as a backup disk. It works absolutely fine when the computer is turned on: no problems with writing or reading, and everything is done in dead silence.

However, if I turn the computer off and the disk is still connected, it stays on and makes clicking noises. For that reason I only connect it when I need to back up or restore. Does that mean there's a problem with the disk, or with some preferences in the system itself?

Or something else?

Disk Utility claims that SMART data is "not supported", so I don't know how to test...

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Typically this is the kind of error we find: sometimes at the end of the run of two branch circuits, the circuits share a junction box. One may feed, say, some outside lights. The other load served through the junction box may be, say, bedroom lights. One load is fed by one branch circuit; the other is fed by the other branch circuit. The hot conductors are wire nutted to their respective circuits, but when it comes to the neutrals, sometimes they are all twisted together with one big wire nut. What does this do? Suppose the bedroom lights are on. The neutral return current, since it is joined with the neutrals of both branch circuits, splits and returns to the panel through both neutrals. This creates two net currents: one by robbing the bedroom circuit of some of its balancing neutral current and the second by putting neutral current on the outdoor light circuit, which gives off an equal magnetic field.

Connecting neutrals in this way creates a parallel path and violates...

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I whenever I open google chrome or firefox on my pc I get a really annoying buzzing noise.

I've been trying to pinpoint the noise - I removed all hard drives and swapped them all for new ones. Doesn't seem to be the hard drives. I have an SSD, so I ran only that drive and the noise still existed, so I ran just a normal Sata drive and same problem, still the noise.

Furthermore with the case open, when I listen around the case the nosie seems to be coming from between the processor on the motherboard and the connectors on the motherboard (for things like USB etc.)

I've tried unplugging my USB devices one by one to see if it is that. It's not though.

Here's what I have:

CPUZ Info click here

Summary: Intel Core i5 760 8GB DDR3 Ram NVIDIA GeForce 8500 GT NVIDIA GeForce 7300 GS Gigabyte P55A-UD3R motherboard

Do you have any ideas of what could make noise in the computer while chrome is open? Can you make any suggestions for me of what I need to...

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Depending on what you have plugged in, and what type of computer you have, the USB ports in your computer can "go to sleep", causing the recognition noise to sound as the ports go to sleep.

For example, if you have a laptop and the battery gets too low, it will shut off some USB ports, and if you have a device or USB drive plugged in at the time, it will act as if you unplugged it from the computer, causing the noise to sound.

The sound may also occur when devices turn themselves off. For instance, many computer printers like to stay off when they are not being used. The PC can wake them up when necessary, and when they turn off, Windows detects this, just as if they were unplugged from the...

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Does the noise change and fluctuate when the computer is working/hard drive seeking?

Check your playback devices and disable/mute what's not needed. Unusual to have to do that, but best to check.

Cheap sound cards (integrated) I have experienced in my life all share the same imperfection of producing a high pitched static sound that changes with CPU/HDD activity, grounding doesn't really help at all. It seems the better the headphones or speakers, the worse the sound because they amplify it so well. Lo-fi speakers don't usually reproduce the sound so it's not heard.

Turning the system volume up to full and using volume controls on the headphones works well as a work around, if you have headphones that can do that. Simple signal to noise ratio stuff.

Otherwise, and I hope not, a new quality dedicated sound hard may be...

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Careless troubleshooting of a microwave oven can result in death or worse. Experienced technicians have met their maker as a result of a momentary lapse of judgement while testing an oven with the cover removed. Microwave ovens are without a doubt, the most deadly type of consumer electronic equipment in wide spread use.

The power supplies for even the smallest microwave ovens operate at extremely lethal voltage and current levels. Do not attempt to troubleshoot, repair, or modify such equipment without understanding and following ALL of the relevant safety guidelines for high voltage and/or line connected electrical and electronic systems.

We will not be...

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Below is a listing of components within the computer that may cause unusual noises to be generated. To determine what components are causing your issue, verify that lights on your hardware devices, such as the CD-ROM drive, are not on when the noise is being made. If you are only encountering excessive noise when a device is accessed, it is likely that the device is causing your issue.

If the noise you are experiencing is occurring the entire time the computer is on, it could be any of the below devices. Distinguish what device is causing the noise by reading through each of the below sections.

CD-ROM, DVD, or another disc drive

CD-ROM and other disc drives may generate noises when the drive is accessed. Disc drive noise should be a soft whirling noise when the CD-ROM drive is accessed and only be generated when the CD-ROM is accessed.

It is abnormal for a CD-ROM to experience any of the below symptoms.

No noise Clicking while accessing the CD-ROM....
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If your computer makes noises, then you’re having a hardware issue of some type, which means you’ll probably need to open the case to determine what’s causing the noise. There are only a few components in the computer that move, so unless the noise is a beep, then there is likely an issue with a drive or a fan. If you are not comfortable opening the computer case while the computer is running, be sure to take it to a computer repair shop so they can help find the cause.

Computer Noises From Inside The Case

If your computer makes weird noises inside the case, it can only be caused by a few things. The components that can generate noise in the PC are the fans (there could be several), CD or DVD drive, Floppy drive, hard drive and power supply. You should start by ejecting any disks that might be inside of any of the drives, such as the floppy, Zip drive or CD drive. If there are no disks, and no activity lights on those devices, then it is likely one of the...

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I was at a client's house to have a look at her computer. She said it wouldn't start. I had already assumed the PSU was bad, but I didn't expect to find even more when I arrived. It turned out the power supply had zapped every single component in the computer except a single DVD-ROM drive at the very top of the case. None of the components (motherboard, CPU, hard drive, etc.) had any signs of a surge such as burnt chips or even the smell of them being burnt.

In the end, the only other devices that powered up with the computer with a working PSU were the system case fans. I wasn't there when the power supply blew, but I would have to imagine that it released some sort of electromagnetic pulse through the whole system.

This was a weird case, and an educated guess as to what happened; however, there really isn't any other explanation. The hard drive wouldn't even spin. Only the devices that produce a natural electromagnetic current (fans) and the DVD drive (which was...

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What's the matter Wall-e, why so sad?
Is your microwave making funny noises? Is your gourmet dinner all chewy in spots 'cause it's not cooked evenly?

Well I can relate!

The turntable on my over-the-stove microwave had been broken for a while, just made a nasty grinding noise and didn't turn. There is a button on the control panel so I could turn off the grinding noise, but things really cook better when the turntable spins. I wanted to see if I could fix this microwave rather than replace it.
It turned out to be easy!

This Instructable will show you how a broken turntable motor can quickly, cheaply (and safely) be replaced in no time flat!
The unit doesn't even have to be taken off the wall for this repair.

Over-the-Range vs Tabletop - the images shown are for an over-the-stove microwave, but you'll find that counter-top units have an access panel on the bottom making the repair nearly as easy.

Safety first!

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If it is just one click when you switch on, this could be merely a relay in the charging circuit becoming noisy with age. If you get a number of clicks, or a string of clicks, then as Ranch hand has said, it could be your hard drive threatening to fail.

In either case you should back up your data as soon as possible to some form of external storage. Your data is the stuff that matters - work, photos, music, etc..

How you back it up matters far less than that you do back it up. You can use anything from memory sticks through DVDs to external (USB) drives of whatever size you need or even to on-line - cloud - storage. Just make sure it is backed up !

You can replace computers, operating systems, applications. That is merely expensive and tedious. If you have lost your data, it's lost.

Chris Cosgrove

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We’re all familiar with the Connect/Disconnect noise Windows makes when you connect and disconnect USB devices. But things get a little spooky when you hear the USB jingles happening for no apparent reason. You’re just working on your computer when suddenly and inexplicably, the USB noises go haywire for a few seconds, connecting and reconnecting while you wonder what demons possessed your computer.

Here are some tips that can help you exorcise these phantom USB noises.

This is the quick and easy method (though not as robust as the tool I’ll talk about later). If it does work, then it’ll save you the hassle of third-party software.

When you start hearing the USB noises, quickly click the Start button, type device manager and hit Enter.

You’ll now be in the Device Manager window. Drag the bottom of the window down to make it as tall as possible, then expand the options for all the things attached to your USB ports (keyboards, mice and other pointing...

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