Question about Computers & Internet

2 Answers

PC will not boot

When I put my computer together and turn on the powerswitch on the back of the power supply a short whistleing sound comes from the power supply and pressing the the power switch on the font of the PC doesnt do anything. I have had this same problem before and somehow I got it to work but I dont recall how.

Posted by on


2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has answered 20 questions.


    An expert that has over 10 points.

  • Expert
  • 50 Answers

Just turning on the powerswitch on the back of the power supply without switching the front switch shold not cause any noise. Check if the fan is running at this point. Replacing the power supply should fix this problem.

Posted on Jun 22, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 35 Answers

Your power supply is not woring properly, the short whistling sound was from the fan of your power supply. Maybe its too dirty, try to clean it well and place it back. Maybe it might help you..

Posted on Jun 22, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Noise whistling

If the noise is a high pitched hum first make sure it is coming from the PC rather than some other device. Just turn everything off except the computer (including turning off the monitor) and see if the noise goes away. Now if you still hear the noise, turn things back on and turn the pc off for about 30 minutes. Then turn it back on. If the whistle is not present at the start but takes a bit to start -- a minute or two or more -- it is probably heat related. If it is immediate, it is probably due to some hardware failing.

If it's a heat problem and you can, turn the system off, remove the side of the computer and run it that way. If the problem goes away (and stays away) then take a can of compressed air and blow out all the dust and dirt you see in the box (again, turn it off when you do this) close it back up and test. If it doesn't go away, the problem may be more serious, needing attention by a qualified technician (to at least change the heat compound on the CPU and other places).

If the whistle is immediate and you are comfortable with it, put your finger in the center of each of the spinning fans to temporarily stop them. Stop them only for a second, not for more. If the whistle stops have that fan replaced. Finally, if the whistle is almost immediately apparent when you start the system then it is usually coming from the either the power supply or the hard drive. A replacement power supply should cost about $40. In most systems they are easy to change so it may be something you could do yourself. We charge $49.50 for the labor, just to give you a rough idea. If changing the power supply doesn't do the trick it's probably the hard drive. So back up your stuff and take it in to be redone....Hard Drives are generally around $70 and labor to redo the system $100.

Feb 11, 2014 | Microsoft Windows XP Home Edition


You press the power button on your computer and nothing happens

1. Find out if computer has power.
Are fans running, lights on? When there are no signs of power, 99.9% of the time its a faulty power supply. Before you replace power supply try this.Unplug the power cord to the PC, wait approx 10 mins and plug back in. Does the computer power on now? If so, it may have been a power surge that the PC experienced. You may want to invest in an Uninterruptible Power Supply unit.
2.Computer is turning off by itself.
This can be a electrical short to a serious hardware issue. Open the computer case and inspect the wiring. Make sure there is no chafing or exposed direct contact with metal. Look for loose connectors. Connectors can become unseated. Inspect and reseat all connections.
3.Computer beeps shortly after powering on.
The beeps are error codes and can be used to troubleshoot computer search google for number of beeps
4. PC powers on and display codes.
POST (Power On Self Test) codes, are usually specific to the manufacturer. It’s best to go to manufacturer support website the codes can point you in the right direction. If you get “No hard drive connected” error, reset the connectors on the hard drive and test again.
5. Computer turns on but the operating system wont load completely.
Boot up in safe mode by pressing F8 during boot up, select safe mode with networking and after everything loads, boot back up in normal mode. If you installed any recent drivers you can uninstall them and see if that helps if this is not helpful most of the time you will have to use a restore disk and put computer back to factory settings.

on Dec 07, 2009 | Computers & Internet

1 Answer

Hp pavilion modelp6510f press power switch on top of pc does not light computer fans blow but compute does not turn on

ok th p6000. complete range when they were made had to be recalled as they put the copper expansion pipes ran across the gpu & cpu hence a massive overheat problem. they put copper shims over the cpu & gpu but this worked for a short time but it was inevitable and both units ended up being cooked i had this problem with mine. so if you have tried external monitor with no images it would sound or more likely to be the gpu cooked sorry for the bad news.

Jan 28, 2014 | Computers & Internet

1 Answer

When I turn on my desktop computer it runs for 5 seconds and shuts off and keeps doing that.

I have the same problem with my computer and almost the reason for that is the Power Supply of your computer. try to do this, if you notice when you turn on your computer and you hear a whistle sound then it is positive that the Power Supply have a problem. Try to use another power supply for your computer.


Jul 29, 2010 | Sony VAIO VGC-RB38G PC Desktop

1 Answer

Computer wont boot up

Take the battery out and try to boot the computer up with the external power supply.. If this works the the battery is shorted. If it doesn't then you will need to try another power supply, if that doesn't work then something internal has shorted in laptop

Feb 24, 2010 | Acer Aspire One PC Notebook

1 Answer

CPU fan switching on and off repeatedly, computer not switchingon

Check the power supply switch of your cpu casing, make sure that it will not stuck when you switch on the power.

May 08, 2009 | Intel Motherboard

1 Answer

System turning completely off for no reason then rebooting automatically


That kind of problem is very common to all computers. There are three possible causes. the power supply got shorted, The memory got dump and cannot resist to load the operating system. The system got conflict both the hardware's and software's.


1. try another functional power supply or test your power supply with appropriate tester.
2. REmove and clean the memory both the bank and the chips and test. if same problem occur then try another functional memory.
3. last; format and reinstall the hard drive to renew and refresh all setting and install all the drivers.

if these solution won't work that the time that the motherboard got shorted. however if in the first boot the system display it bios then that can be resolve.

tell me if ever what happen.


Oct 19, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

2 Answers

Computer was working earlier, turned off unit - later tried to turn it on but it won't work

you can try replacing power supply first since its the easiest one and you can return it if its not that.

also you can try removing the power cable and cmos battery for 30 minutes (sometimes this worked on some computers)

Feb 22, 2008 | Computers & Internet

1 Answer

PC seems powerless except.....

This sounds like a short of some kind or bad power supply or motherboard.
  1. Take any components that are not necessary to boot the computer. Try turning it on again
  2. Try taking all parts (motherboard, power supply) out of the case and then put them back in (I know that sounds weird, but it has worked twice for me before).
  3. If you get to this step, either the motherboard of power supply is shot. The easiest to try would be a power supply. Replace it if you have one laying around or borrow one out of another machine for troubleshooting purposes. This is assuming they are standard ATX power supplies.

Feb 20, 2008 | Computers & Internet

2 Answers

Continuous low whistling or thin buzzing noise

The high pitched sound is an indication that theres a short most likly in the Hi voltage sweep section or power supply and with out the proper training you should not even take off the back as there are no user replaceable parts inside of these sets. All the parts are soldered in and you can not look at them and see that they are bad.. its almost like when your check engine light comes on you look but what do you see without a computer to read the on board computer vto see what the problem(s) are. Take the set into or call a pro to assist you with this repair. good luck

Jul 25, 2006 | Panasonic CT-27G33 27" TV

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

107 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18425 Answers

Alun Cox

Level 3 Expert

2678 Answers

David Payne
David Payne

Level 3 Expert

14162 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides