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Laptop keeps shutting off,battery is not on electric cord is connecting.. cord has a slight buzzing from the square is this normal..and i cannot use my usb ports

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First...shutting down issue. try to replace your power supply. you seem to have a faulty adapter and has not given the right power to your laptop, or loosing power at a longer period. the buzzing sound is not normal, stop using it.

when you're done with the shutting down, we tackle the issue with the USB ports, later

Posted on Apr 10, 2008

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"Buzzing" from the brick generally means the fields are breaking down. This could also cause a problem to the main board.

Sometimes Radio Shack has the IGO Universal on sale, I paid $28.95 for mine with 8 different tips.

As far as the USB, the northbridge chipset should be updated, google the north bridge after installation and running

Also if the USB's bus is not operating, check the pcmcia card bus, if you install a wireless card or cardbus usb adapter and it hangs you have a motherboard chip issue.

Posted on Apr 10, 2008

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Low battery warning


Take the battery out, plug in the charger and see if the laptop works.
If it works, the battery may be the problem.
Check the AC Adapter
Check to make sure the adapter is plugged securely into the wall outlet, connected firmly to the adapter box and to the back of your laptop.
Most AC adapters have a little light in them on that rectangular box in the middle of the cord that lights up when it's getting electricity.
If that light isn't on, try a different outlet.
Check your fuse or circuit breaker box and plug a different device into that outlet to make sure there is power to it.
If it still does not light up, your adapter could need replacing.
Also check the adapter box for signs of warmth, as it will generate heat when it's plugged in. No heat means no power.

Remove the Battery Sometimes it's as simple as a seated battery.
Remove the battery entirely and clean out any dust, lint or hair that may be clogging the connectors and preventing a proper connection.
Reseat the battery securely and make sure the little locking pins that hold your battery in place are securely fastened and there is no movement.
Fix a Broken Laptop Charger
If your laptop charger seems broken, it's most likely because the battery will not charge.
You plug in the cord, the lights come on, but the charging light doesn't change or blinks repeatedly.
When you remove the power cord, the laptop shuts off instantly due to the depleted battery. There's more than one cause for this, and it's not always a broken charger.

Check the connection between the charger and the laptop.
It should fit firmly in the DC jack without wiggling.
If it is loose, use electrical tape to hold it in place so the charger can receive power.
This is a temporary fix, however, because a faulty connection can create sparks and cause a fire or injury.
A loose connection will just get worse over time, so have it sent to a DC jack specialist as soon as possible.
Turn off the laptop and flip it upside down. Locate the latch that secures the battery and slide open.
The battery should pop out; give it a tug if it doesn't.
Apply a small amount of rubbing alcohol (Methylated Spirits)to the tip of a cotton swab and use it to clean the battery's connectors.
Dirt can build up and interfere with the connection, giving the appearance of a broken charger. Let the alcohol dry completely and re-insert the battery.
Slide the latch to secure it and plug in the power cord to test it.
See if the laptop powers on with the charger only and battery removed.
If it does, the battery is the likely culprit and should be replaced.
If the charger is truly broken, the only thing to do is to replace it or the power cord attached to it. Look on the bottom and write down the part number.
Call the laptop manufacturer for a replacement charger or search for the part number on eBay.
If you purchase from anyone other than the original manufacturer, ask for genuine parts to reduce the possibility of problems.
Troubleshoot Mag Safe adaptors
http://support.apple.com/kb/ts1713


Acer laptops allow you to take your work and entertainment on the go.
You can work on a presentation during a long flight or watch a DVD in the middle of a park.
Acer laptops can do this because they are powered by batteries, allowing the laptop to run without having to be plugged into a power source.
Normally, the battery can be recharged by plugging the laptop back into a power socket.
But certain problems can keep the battery from charging.Electrical Connection

For laptops to charge, they need to be connected to a power source.
Although it may look like you have the cable plugged in correctly on the Acer, make sure that the cord is firmly plugged into the power socket.
There should be a light on the Acer keyboard as well as a power symbol on the taskbar for your operating system that tells you whether the laptop is running off electrical or battery power.
If it is plugged in, make sure that this icon shows that it is on electrical power.
Also check the socket where the Acer is plugged in and make sure that it isn't turned off at the main circuit breaker.

Battery
Turn the Acer over and make sure that the battery is properly placed in the battery compartment. Most laptops will have locks that keep the battery securely in place.
These locks can sometimes come loose.
Use a piece of strong tape as a temporary measure to keep a loose battery in place.
Clean the terminals on the battery to ensure that there is a good connection.
Remove the battery from the battery compartment.
Apply rubbing alcohol to a lint-free cloth. Rub this cloth over the shiny metal terminals on the battery.
Over time, batteries lose their ability to be recharged.
If neither of the aforementioned steps works, you may just have a bad battery.
Check with Acer or other vendors to find a replacement for your model.


BIOS Update The BIOS (Basic Input Output System) controls a number of basic functions for a computer, such as assigning the hard drives and other system functions.
The BIOS also controls the battery charging function.
Certain Acer models have a bad BIOS that operates the computer normally but doesn't charge the battery.
To solve this problem, you need to perform an operation called "Flashing the BIOS" where you download a new version of the BIOS and upload it to your Acer.
Check on the Acer support site to see whether your computer model could possibly be affected by this.

Adapter
The power adapter, the part that plugs into the Acer from the power socket, can go bad.
Check for a power light on the adapter.
If the light is not lit, you probably have a bad adapter.
Replacement adapters can be purchased from Acer or other online vendors.

http://support.acer.com/us/en/default.aspx
http://www.solarum.com/2010/01/03/acer-aspire-battery-not-charging/

Jul 14, 2013 | Acer Computers & Internet

1 Answer

Asus eee pc sends terrible buzz from mixer to speakers when charging


Wrap some aluminum foil around your charging cord (right up to the point where it plugs into the computer)
This happens when elecromagnetic interference happens from the electricity from your cord and your A/V cords come too close together without protection.
Tin foil, any can's if you cut them properly, essentially just something to keep the interference away from the cord. You mostly notice this at concerts or if playing an electric guitar and it gets too close to the amp it creates a humming/buzzing noise that can get pretty annoying. Try the tin foil though that should work fine, don't be afraid to use a lot of it either, it won't hurt anything, the better wrapped it is the more likely you will get rid of the buzz

Apr 18, 2013 | ASUS Eee 4G Notebook

1 Answer

Moved dryer out to reattach vent hose, now when turning on it buzzes for about 10 seconds then shuts itself off


Sounds like a poor electrical connection. Check where the cord connects to the dryer, and where the cord plugs in to the recepticle. Could easily be where the wires connect onto the recepticle.

Nov 06, 2009 | Whirlpool WED5100SQ Front-Load Electric...

1 Answer

IBM T40 Thinkpad electrically charged


Dear fredb001,
Try to pack your laptop with integrated soft case that attach to your laptop whin you hold it on you lap, so you will no longer feel that slight "buzz". It minor electric shock..

GoodLuck!

Jul 09, 2009 | Battery Technology IBM ThinkPad T40, R50

2 Answers

Battery died


once you connect the cord to a socket yes its automatically switches, could be a bad cord (the cord with the black box on it) and they are not cheap best bet get it on ebay. Hope that helps =)

May 20, 2009 | Toshiba Satellite 1800-S207 Notebook

1 Answer

Computer runs off battery only not the power cord (battery is brand new)


You have a serious problem with the power and charging circuit. Normally if the battery is faulty the laptop can function with the power adapter plugged and running off the mains.
If a techo cannot fix without replacing the motherboard, then replacing the motherboard might not be a cost effective solution.

You salvage the hard drive by inserting it into an USB hard drive adapter case and use it as an external USB hard drive.
Sorry about this, you have very few options.

May 14, 2009 | Gateway MX6447 Notebook

1 Answer

Compaq presario c700 WAS WORKING I SHUT IT DOWN AND NOW IT WILL NOT POWER ON at all


Is the power cord/brick *firmly* plugged in in all places? Sometimes, the cord from the brick comes out slightly, breaking the power connection. If your battery is old/no longer holding a charge, the machine wouldn't start again. Also, if above is ok, remove the battery, plug the power back in. Does machine start now? If it does - replace battery.

gurutim

Mar 09, 2009 | Compaq Presario 700 470024-192 Notebook

1 Answer

Buzzing noise coming out of television when i plug in power cord


Right, the problem is caused by the earthing of the power supply.

You need a box, which isolates the earth from the laptop to the television, known as an Isolation Transformer. This goes in between your laptop and television, and removes the cause of the hum.

The other option is entirely at your own risk, as you're dealing with mains electricity, however, cover the earth pin with some insulation tape, thus stopping the power supply from earthing. Keep a close eye on the condition of your power supply and cable, as you will not be protected against shock if a fault should develop.

The same problem exists with Acer Laptops, as I have one, and use an isolation box when I want to play music in venues from my Laptop.

Mar 04, 2009 | InFocus X1 Multimedia Projector

4 Answers

Loud buzzing when amp connects to guitar


Is there a loose connection anywhere?

Jan 03, 2009 | Music

1 Answer

My compaq evo stopped working. For about two weeks I had a buzzing where I place the power cord. At that time periodically the whole thing would shut down. Also now it will not start at all and the...


Allen -

It sounds as though you may have either blown the power supply, or burned the power circuit on the motherboard. That buzzing sound usually indicates an electric arc, where electricity passes through open air from one contact to another; In this case, it was probably caused by a loose or broken solder connection on the laptop's power jack.

If you can get your hands on an identical or equivalent power supply, test it with your laptop. If it works, then the power supply just needs to be replaced.

If not, try taking the battery out of your laptop, and plugging it in again. Sometimes, when a power supply burns up, the battery will discharge, rendering it inoperable.

Hope this helps!
-thinstatic

Jun 13, 2008 | HP Compaq Evo Notebook N600c

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