DV 4000 noise problem

I have problems with a sound card or chip on your laptop model hp dv4000.  I try a lot of different solutions to solve the problem, but it does not seem to deal with the matter.  What can I do?

How can I find or add a new sound chip for this computer.

Tags: Notebooks

Similar Questions

  • Satellite A500: update BIOS V1.50 is fan noise problem reappears

    I have a Toshiba Satellite A500 with fan noise problem.
    It has been partially resolved the upgrade of BIOS from v1.20 to v1.30, according to this thread:
    http://forums.computers.Toshiba-Europe.com/forums/thread.jspa?threadID=46719&start=0&TSTART=0

    Yesterday I updated the BIOS v1.50, and the sound of the fan returned.
    I do not recommend this upgrade if you have had the problem of fan noise.

    I have downgrade BIOS v1.30 and fan noise problem is solved again.
    I know that people have problems to get the downgrade to BIOS, so I describe the process in this thread:
    http://forums.computers.Toshiba-Europe.com/forums/thread.jspa?threadID=50577&TSTART=0

    Thanks mate for sharing this with us

    But perhaps you could use the v1.5 BIOS and could reduce or reduce the activity of module cooling in Vista/Win7 power management settings.
    It would be interesting to check it out

    In any case thank you for this info

  • With differential measurement noise problems

    Hey everybody.

    I use an NI USB-6211, LABView 2011 and Win7.

    I'm trying to measure a voltage through a resistor using differential mode. But unfortunately im getting a lot of noise (on + - 25%).

    The voltage source I use is variable and can go up to 600V. With my diet I am essentially heat a metal plate.

    A parallel voltage divider is used to reduce the voltage by one hundredth (1 MOhm and 10 kOhm).

    Two wires attached to the lower resistance then go directly into analog input 0 + 8 of data acquisition.

    So if I'm trained 600V to the plate, data acquisition should get about 6V... and that's what I measure with my voltmeter attached to the acquisition of data input pins.

    I also tried these resistances of POLARIZATION and connected the + and - leads to the analogous to the ground like a resistance I used 10 k, 100 k and 1 MOhm and 2 MOhm and

    continue to receive a bad signal.

    Two sketches of the wire as a signal (100V, supposed to measure 1V, no CORRECTION) are attached to the post.

    Concerning

    EDIT: I forgot to write that I even tried an another NI DAQ and still get this noise problem.

    Also, I measured the voltage source signal using an oscilloscope and I see that noise. But the differential mode isn't supposed to

    reduce noise to a minimum?

    Hey everybody,

    come to understand that the voltage divider resistors are medium to high and they were the main reason for the noise

    problem.

    Before I used 1 MOhm and 10 kOhm, now I use 100 ohm and 100 kOhm and with a median filter in this regard, it works very well!

    But still, if I use the resistance of these BIASES they do not change.

    Concerning

  • scope of nor-5114 interfaced to 2576 OR multiplexter relay and a signal to test via Coax, noise problems

    Hello

    We use a system of connected steps and have questions about the best method to interface to our test design.

    DUT (Test Point [n])---> 6 ft coaxial cable---> 96pin--> NI 2576---> NI 5114 (map interface) connector

    Note1: the map interface 96pin and equipment, OR share the same floor plan.

    Note 2: We have tried with changing the setting scope NI5144 of 50 ohm and 1 M ohm but do not seem to see a difference on our potential noise problem.

    The questions are:

    (1) what is the best place to justify our coax cable shield, the side was FORCED (to the mass of Council) or on the side of 96 pins?

    (2) we currently have the shield connected on the side 96pin and it brings in some possible noise to our test had TO that point signals, we added a 100 ohm series resistor close Testpoint and it helps solve the problem, but it is not acceptable to have this resistance in the beam of cable by our client, and we try to find another option to solve this problem of potential noise.

    Any help and advice on this is appreciated.

    Kind regards

    Miguel

    Miguel,

    1.) as long as you do not adopt loops of Earth in your system, you should be fine to be implemented for the ground of coaxial cable. I didn't want to forget that it is important that your HAD is not referenced to the mass of power also because this may introduce ground loops in your system.

    2.) as for the culprit of the noise that it is the combination of the two specs you listed. Amplifiers in your DUT output are specified for less than 1/10 the capacitance of the coaxial cable. This is the origin of the noise that you see, because the op amp is unable to drive the capacitive load and causes instability of the amplifier.

    There are a few methods you can use to remedy this situation and here is a resource that describes some of these solutions.

  • How to fix a noise problem any on a macbook under xp

    How to fix a noise problem any on a macbook under xp and the driver has been removed for the macbook, I tried the auto fixes

    Hello

    If you have installed Windows XP using Boot Camp in the book of Mac, you will need to contact the Apple Support.

    http://www.Apple.com/support/MacBook/

    It will be useful.

  • iPhone whistling noise problem 7

    Hello. I was thinking of getting the iPhone 7, but lately, the problem of noise resulting (hiss) because I'm not going to take now. Is - this problem stems from what could be reversed? Really annoying situation. We expect an explanation from Apple.

    Apple says you can get a replacement if your iPhone is a whistle. Seems to be the real problem. But how would I know that the new phone will not have this problem?

  • Satellite L850 - weird noise problem (not events)

    Hello

    I have a weird problem with my laptop. Since a few days, my laptop started to make a little noise from the base of the laptop.
    I care because during the day I don't even notice, but now (it's 05:00)
    Clearly, I hear a noise coming from the base.

    It has not happened before and I don't know what could be, because the strangest thing is that, according to Toshiba Health Monitor, fan is 0% (because I'm on mode eco and do nothing to do) and the CPU is at 48th. As you can imagine, my laptop is far from heating.

    Then, where this noise could come from?
    Now, I know that this isn't the ventilation openings, but something inside the laptop (maybe HARD drive?)

    And I'm confident in the vents because the vents start to operate when I load a movie or game, and when start knocking noise that I do not speak of persists.

    It's not embarrassing, because I have to be in complete silence to hear it. As I said, I don't notice the noise when it is diurnal, and I could live with it, but not knowing this noise source makes me a bit paranoid. I bought a month ago, so I don't think that I have to clean.

    Thank you.

    On this virtual path, it is not easy to tell where the noise is coming so if you want to solve this problem I think you should bring to the nearest post of Toshiba and the guy there it should check. Guarantee is valid if repairs must be free.

    Can you tell us what part of your laptop is this noise?

  • Noise problem Satellite L300 C21 external Sound

    Hello everyone,

    I have a Satellite L300 C21.

    It's been eight months now. But I experienced some "special effects":
    When I plug the laptop through my stereo receiver headphone output, I have great sound.
    It is perhaps a matter of configuration.

    But when I plug - off the adaptor, the noise disappears.
    Running "sur-accu" is very good.

    All solutions?
    Your Ralph

    > When I plug the laptop through my stereo receiver headphone output, I have great sound.
    > It is perhaps a matter of configuration.
    > But when I plug - off the adaptor, the noise disappears.
    > Running "sur-accu" is very good.

    Hello

    Perhaps this noise is affected by the main stream sounds like a problem with the Earth or something like that.
    Some guy in the internet have recommended use of 3 power cord cable and adapter
    In most cases, this could eliminate these noises.

    I think you should get in touch with ASP in your country. Maybe guys might provide you with another power adapter cable

  • Satellite U300 - noise problems

    Just got a U300. Beautiful machine, but it's impossible to use in a silent room:

    (1) CPU fan turns on and off all the time; It is calibrated to vary with the temperature of the CPU in a really annoying way: nothing in to 51 degrees, then half speed up to 53 or two, then full blast. Thus, on how high-performance fan continues to go and turn off all few seconds if you do a normal work. So far, the only solution I found is to create a power mode that sets the State of the max processor at 8% and a minimal State to 0%, while the CPU always gets strangled if temperature rises and does never really hot. Of course, this is not satisfactory.

    (2) the hard drive making noises clicking constant (no noise search). I had this before with another laptop, and it's because of the head of parking (car parks the head immediately when it is idle, to save energy). With the other laptop, it was possible to change a setting in the bios for hard drive, disable this special energy saving feature. I was not able to do this with the U300.

    Someone has a solution or does anyone know how to communicate with the engineers from toshiba? Problem 1 is easily fixed with an upgrade of the bios setting fan behavior, problem 2 with an update of the bios hard drive, so it shouldn't take much effort I suppose.

    Thank you very much in advance for any help / comments etc!

    Hello Skymaster

    Satellite U300 is known to me because we have this laptop in our office. It is really nice for laptop and can be taken anywhere. What about these two problems described in your ad?

    Cooling fan is perhaps often turned on but, in my view, it is acceptable. Maybe I see it a little different because we use them in our office and it's not so quiet. In any case, I use two laptops from Toshiba for the moment. One with Windows XP Home edition and Vista. I got two of them to work pretty quiet using level lowest for cooling and method using balanced in Vista power management and reducing CPU utilization. On two laptops I na? poor performance of notice and I don't understand why this is not good for you. Of course, I don't know what you're doing with your laptop, but I use it for Office application and I am satisfied.

    On HARD drive, I can't write a lot because we na? t notice some serious problem. I don't think the BIOS update can change anything.

    I don't understand why you want to communicate with the engineers. They can say, this is just to thank you for your report. I don't see any sense with it. What you need to do is to contact the nearest authorized service provider. Talk with them, explain the situation. They have Toshibaa? diagnostic tools and let s check the HARD drive or motherboard even.

    Good luck!

  • Satellite 2450 S203 fan noise problems

    Hi guys

    I had a Sat 2450 S203 since October 2003 and have recently noticed that whenever I run memory intensive programs fan noise levels are excessive and constant!

    If someone could Advisor on the replacement of the fan and know if I should do it myself. Please also comment on the impact on costs as well. Are there other ways around to get rid of this problem?

    Hello

    After this long period, your device must be cleaned properly. I guess that dust inside the unit don't allow adequate cooling and cooling fan must often runs and faster to cool the hardware components. It is not only specific for your device, but for all laptops.

    I'm sure that after cleaning, your device can take a deep breath and will work a lot better and calmer. I noticed the same thing with my Satellite P20. After cleaning the laptop runs very quiet and cooling fan just works sometimes. I'm very happy now.

  • Satellite A100: High grade noise / problem solved using RMClock 2.25

    Here are the screenshots of how I calibrated RMClock to solve this problem on my Satellite A100 with processor T7200.
    http://img99.imageshack.us/img99/408/rm1pa2.jpg
    http://img99.imageshack.us/img99/2816/rm2ik6.jpg
    http://img99.imageshack.us/img99/3485/rm3us7.jpg
    http://img99.imageshack.us/img99/6153/rm4xk3.jpg

    Nice info
    Found a similar topic about high acute noise. Maybe it helps others.

  • Satellite C750-A103 made a lot of noise - problem with the cooling system

    My toshiba machine made a lot of noise... like a plane. And it gives me the message "a problem with your cooling system has been the detection.

    Turn off immediately and come back for the service "."
    What should I do? It has been recently formatted, also?

    + The message was edited: mode number + added

    You did not provide details on your laptop model and system that is installed on the laptop.

    Even his I don't know how old is the laptop, but according to this short message, it looks like there is a problem with the cooling system.

    Probably notebooks cooling fan doesn t work properly and the unit cannot be cooled as it should this can lead to cell damage through an internal temperature longer.

  • Satellite M40-184 and noise problem

    I bought two days ago, this laptop and I already found two problems. The first is that always before the speakers seem to start working a strange noise (ICT) and it is very annoying for me. Is there a problem with the speakers.

    The second problem is that when I use the laptop for more than two hours the AC adapter also makes a very annoying noise. He is also very strong (more strong that fans or anything else). Is it normal to do what noise?

    Thank you

    Hi Manos,

    I'm not sure of the sound from your speakers, normally I wait till they're totally calm, unless a job is running that use.

    Regarding your power adapter, should make any noise at all. It can become hot for what is quite normal. I would recommend the adapter/notebook back to your provider as soon as possible.

    Kind regards

  • Portege R600 - white noise problem

    My Toshiba Portege R600-102 a constant white noise (as you can hear on http://bit.ly/7HaRfn), which becomes apparent when the computer is used with headphones or connected to a speaker.

    This happens with the latest audio drivers under Windows XP and Windows 7.

    The noise does not disappear when I turn off the microphone or disable the onboard sound of the Device Manager.

    In fact, when I connect the laptop to a PA system pro (Edirol UA-101 with Yamaha MSP5) via USB, I get the same noise from Yamaha! That tells me that there is probably a fundamental problem with the motherboard.

    Someone has a similar problem? Or ideas?

    Does this happen with and without mains?

  • In the analysis of noise problem

    Hello

    I see now a BiQuad filter two steps and I want to know the noise in the axis of the output "out". However, the analysis of noise gives me nothing, but just a black background without any digit or number. What would be the problem? Thank you very much!

    Better compliance

    Billy

    Hi Billy,

    It's a problem of DC convergence in the simulation. In the scan options, select use custom settings.

    On the Global tab, the value of the Shunt resistance of analog nodes on the ground [RSHUNT] 1e + 008

    On the DC tab, set the iteration DC [ITL1] limit on 400

    Then simulate again and now you can see that they are all posted!

    Hope this helps!  :-)

    Kind regards

Maybe you are looking for