Why does my computer make a hissing noise sometimes?

Sometimes the noise comes on and off and I have no idea why. Also, it hums continously sometimes, does anyone know why?

No one here can diagnose that sort of hardware issue. Take it in for analysis.
Barry

Similar Messages

  • Why does the iPad make the same noise when it connects to a charger that doesn't charge it as one that will charge it???

    Why does the iPad make the same noise when it connects to a charger that doesn't charge it as one that will charge it???
    I would expect that it would make an unusual noise if plugged into a generic USB charger that does not have enough oomph to charge a pad to alert you - otherwise, you might think the noise is reassuring that you are actually charging it.

    I guess my question was actually more of a comment on the (lack of) design!  It is unusual that something like this would still be in an Apple product.  There are wall chargers that have a USB port on them that do not have the required oomph to charge the iPad.  I have one that has two USB ports, one for my iPhone  (it won't charge an iPad), and one for an iPad with greater amperage rating.  I accidentally used the wrong ones for a while yesterday, but noticed before being "surprised" the next morning by an uncharged iPad.  The iPad is smart enough to say "Not charging" by the battery icon when it is plugges in to one of these, so it "knows" - seems like it would be fairly simply to have the iPad make a different or additional noise  wehn it puts up the "Not charging" text icon.  Failsafe user experience?

  • Why does my macbook make a funny noise when I open it?

    After my macbook pro has been on the charger for some time & I open it up, it will make a funny noise & the screen will be blue with a bar on it.  Takes a little bit before I can use it,  Does anyone know what is wrong?

    rjwalker105 wrote:
    I quit all applications & close the lid.  I usually use the charger all time.  If I leave it unplugged from the charger, it will not do this.  It will make a whirring noise & the screen will be blue over my background, will have a bar on it like it is loading.  Then will finally let me use the curser after a few seconds.  Only had the macbook for about 4 months.  It started doing this about 2 month after I bought it.
    If you are still under warranty and/or have AppleCare, call them.  Let them deal w/it.
    Before calling them, try the following first:
    http://support.apple.com/kb/HT1411 Apple Portables: Resetting the System Management Controller (SMC)
    http://support.apple.com/kb/HT1379 Resetting your Mac's PRAM and NVRAM

  • Why does my iMac make a buzzing noise any time my iPhone 5 is near it, even when the phone is on wifi?

    It reminds me of back in the day when your computer speakers would get interference whenever your cell phone is near it, but this is just a constant buzzing coming from my iMac whenever i have my iPhone 5 near it (e.g. sitting on the table next to the iMac when it's plugged in). My iPhone 4 and my last few phones before that never did that. I thought it might have been the LTE signal causing it, but it does it when it's on wifi as well.
    The sound is louder if I have messenger running for some reason. It's odd as ****! If anyone has any ideas, please let me know!

    I forgot to add, it's a Verizon phone so it's CDMA. It used to be only GSM phones that did this.

  • Why does my speaker make a humming noise?

    Its kind of a high pitched whine. It's there whether I am listening to anything or not, anytime I have the volume on. The higher the volume, the louder the hum. It's less than two months old.

    did you ever find out what was causing the problem? The same issue just began with my phone. the audio recording is fine for voice memos, phone calls, etc. but the video is just a buzzing sound

  • I have a DVD I recorded from my tv.  I am trying to make copies and when I insert the DVD I get a message saying it is blank even though it is not.  My question are: Why does my computer think it's blank? And how can I copy a DVD?

    I have a DVD I recorded from my tv.  I am trying to make copies and when I insert the DVD, I get a message saying the DVD is blank, which it is not.  My questions are: Why does my computer think it's blank?  And how can I copy the DVD providing my computer recognizes there is content on it?
    Thanks, Sheila

    TV video typically is copyrighted content.  We'd be breaking several rules trying to help you.  Good luck!

  • HT1338 Why does mountain lion make my computer run slow and my Safari too?

    why does Mountain Lion make my computer run slow and my Safari too? Please help!

    The problem is probably not mountain lion. It works just fine on my computer. And a few million others.
    If your computer is having problems, you can try to fix it with some simple troubleshooting maneuvers.
    Take a look at:
    Mac OS X BASIC TROUBLESHOOTING & MAINTENANCE Tips Mountain Lion 10.8 Lion 10.7 Snow Leopard 10.6 10.5 Tiger 10.4 Why How To Tutorials

  • Why does my computer keep disconnecting from my wifi?

    Why does my computer keep disconnecting from my wifi?

    Some users with various Wi-Fi problems have reported that they were given the following instructions by Apple Support, sometimes with success. After completing the procedure, you'll have to recreate all your settings in the Networkpreference pane. Make sure you know how to do that before you begin. Taking screenshots of the preference pane may be helpful.
    Step 1
    Back up all data.
    Triple-click anywhere in the line below on this page to select it:
    /Library/Preferences/SystemConfiguration
    Right-click or control-click the highlighted line and select
    Services ▹ Reveal
    from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password. Reboot and recreate the network settings.
    *If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combinationcommand-C. In the Finder, select
    Go ▹ Go to Folder...
    from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
    Step 2
    Reset the System Management Controller.
    Step 3
    Reset the PRAM.

  • Does your MBP make the same noise too?

    Hey guys when you insert a CD or DVD into your MBP does your computer make a slight buzzing noise. I was just wondering to see if this was common or a problem. Thanks

    If I understand you correctly these noises are quite normal.

  • W510 makes a hissing noise

    Hi all,
    I just bought a refurbished W510 laptop about two weeks ago.  I love it, but for one problem.  When I turn off the computer or make it go to sleep it will hiss when the lid is closed and the power is connected (in the case or turning it off) or at any time I put it to sleep, power connected or not. 
    I have updated all the Lenovo suggested updates, which includes a NVIDEA driver.  I saw that there was mention of another driver on the NVIDEA site, but I couldn't figure out which one to use.
    I have a W510 with 2 gig ram, a quadro FX 880M graphics card, and I'm running Windows 7 32-bit Professional.
    I talked with tech support and they said they would send me a new AC adaptor, but that was 2 weeks ago and still nothing (the computer can the next day I ordered it).  The power supply is a 135w 20v  FRU PIN: 45N0055
    Any suggestions?
    Thanks!

    Mine also makes a hissing noise..I didn't really bother..mine has other major problems..speaker not working, left click under space bar has issues problems..screen open/closing make a cracking noise..

  • My MacBook Pro won't always charge and makes a hissing noise.

    My MacBook Pro (early 2011) won't always charge unless the charger in a specific position, and when it does it makes a hissing noise. I have chechek other chargers, so it's my laptop. is it my battery?

    I would take it in ASAP,  does not sound good no matter what.
    Genius reservation http://www.apple.com/retail/geniusbar/
    on-line https://getsupport.apple.com/GetproductgroupList.action
    check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

  • Why does my computer display a spring coloured wheel that stops me from doing anything

    Why does my computer display a spinning coloured wheel that stops me from doing anything, the only way to get rid is to switch off and reload...

    These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
    Launch the Console application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ Open LaunchPad and start typing the name.
    Step 1
    For this step, the title of the Console window should be All Messages. If it isn't, select
              SYSTEM LOG QUERIES ▹ All Messages
    from the log list on the left. If you don't see that list, select
              View ▹ Show Log List
    from the menu bar at the top of the screen.
    In the top right corner of the Console window, there's a search box labeled Filter. Initially the words "String Matching" are shown in that box. Enter "BOOT_TIME" (without the quotes.)
    Each message in the log begins with the date and time when it was entered. Select the BOOT_TIME log message that corresponds to the last boot time when you had the problem. Now clear the search box to reveal all messages. Select the ones logged before the boot, during the time something abnormal was happening. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
    For example, if the system was unresponsive or was failing to shut down for three minutes before you forced a restart, post the messages timestamped within three minutes before the boot time, not after. Please include the BOOT_TIME message at the end of the log extract—not at the beginning.
    If there are long runs of repeated messages, please post only one example of each. Don’t post many repetitions of the same message.
    When posting a log extract, be selective. A few dozen lines are almost always more than enough.
    Some private information, such as your name, may appear in the log. Anonymize before posting.
    Please don't indiscriminately dump thousands of lines from the log into this discussion.
    Please don't post screenshots of log messages—post the text.
    Step 2
    In the Console window, select
              DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
    (not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
              View ▹ Show Log List
    from the menu bar.
    There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A crash report has a name that begins with the name of the crashed process and ends in ".crash". A panic report has a name that begins with "Kernel" and ends in ".panic". A shutdown stall report has a name that ends in ".shutdownstall". Select the most recent of each, if any. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot. It's possible that none of these reports exists.
    I know the report is long, maybe several hundred lines. Please post all of it anyway.
    If you don't see any reports listed, but you know there was a crash or panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
    In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
    Please don’t post other kinds of diagnostic report—they're very long and rarely helpful.

  • HT1420 Why does my computer keep asking to be authorized when i put my iphone on the charger?

    Why does my computer keep asking to be authorized when i put my iphone on the charger?

    Authorization and Deauthorization
    See iTunes Store- About authorization and deauthorization for Macs.
    See How to Authorize or Deauthorize iTunes | PCWorld for Windows.
    In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it.
    More On De-authorizing Computers (contributed by user John Galt)
    You can de-authorize individual computers, but only by using those computers. The only other option is to "de-authorize all" from your iTunes account.
      1. Open iTunes on a computer
      2. From the Store menu, select "View my Account..."
      3. Sign in with your Apple ID and password.
      4. Under "Computer Authorizations" select "De-authorize All".
      5. Authorize each computer you still have, as you may require.
    You may only do this once per year.
    After you "de-authorize all" your authorized computers, re-authorize each one as required.
    If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

  • Why does my computer occasionally/randomly tell me "I need to restart..." - in four languages. Something ain't right.

    Why does my computer occasionally/randomly tell me "I need to restart..." - in four languages. Something ain't right.

    Thanks, rkaufmann87, that sounds like me all over. I didn't have a DiagnosticReports folder but I did have a "PanicReporter" folder. I have copied the most recent log (from earlier today) below. I would be grateful for your thoughts on solution or any further direction you can provide. Thanks.
    2011-11-17-085303.panic
    Thu Nov 17 08:53:13 2011
    panic(cpu 2 caller 0x00143764): "zalloc: \"kalloc.4096\" (311818 elements) retry fail 3"@/SourceCache/xnu/xnu-1228.15.4/osfmk/kern/zalloc.c:966
    Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
    0x7ef4f888 : 0x12b4c6 (0x45f91c 0x7ef4f8bc 0x13355c 0x0)
    0x7ef4f8d8 : 0x143764 (0x4614d8 0x460150 0x4c20a 0x3)
    0x7ef4f978 : 0x12fdc2 (0x26f045c 0x1 0x3df2d040 0x12ffb7)
    0x7ef4f9a8 : 0x1304e9 (0xd3c 0x1 0x7ef4f9d8 0x8c)
    0x7ef4f9d8 : 0x97e2436d (0xd3c 0xaa99a80 0x7ef4fa18 0x12fdc2)
    0x7ef4fa08 : 0x97e277b3 (0x1 0xd38 0x7ef4fa38 0x68d89e00)
    0x7ef4fa28 : 0x97e23514 (0x68d89e14 0x0 0x0 0x0)
    0x7ef4fa58 : 0x3bfc6b (0x3df2d054 0x2b9317f8 0x0 0x24f0a3)
    0x7ef4fa98 : 0x3bfd28 (0x2b9317f8 0xaa02904 0x0 0x0)
    0x7ef4fab8 : 0x3af826 (0x2b9317f8 0x0 0x0 0x0)
    0x7ef4fae8 : 0x248b69 (0x2b92dbf4 0x0 0x7ef4fbe8 0x100007f)
    0x7ef4fce8 : 0x23ee2e (0x7b19f300 0x14 0x14 0x6)
    0x7ef4fd28 : 0x240ba9 (0x7b19f300 0x14 0x6 0x0)
    0x7ef4fe48 : 0x240be5 (0x7b19f300 0x0 0x1 0x549124)
    0x7ef4fe68 : 0x22ca34 (0x2 0x7b19f300 0x7ef4fea8 0xffffffff)
    0x7ef4fea8 : 0x21b36e (0x2 0x7b19f300 0x0 0x0)
              Backtrace continues...
          Kernel loadable modules in backtrace (with dependencies):
             com.symantec.kext.confidentialData(1.3f44)@0x97e22000->0x97e2dfff
                dependency: com.symantec.kext.internetSecurity(1.3.2f5)@0x62b000
    BSD process name corresponding to current thread: kernel_task
    Mac OS version:
    9L30
    Kernel version:
    Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
    System model name: MacPro1,1 (Mac-F4208DC8)
    System uptime in nanoseconds: 145228120280331
    vm objects:5850460
    non-kernel map entri:1264428
    kernel map entries:8462300
    pv_list:1851864
    kalloc.16:5443584
    kalloc.32:81367040
    kalloc.64:63418368
    kalloc.128:2445312
    kalloc.256:80748544
    kalloc.4096:1277206528
    kalloc.8192:2015232
    vm pages:66613448
    ipc ports:1197700
    MAC Labels:1326168
    vnodes:5018400
    namecache:1644240
    HFS node:6737024
    HFS fork:2779840
    buf.4096:2920448
    buf.8192:56360960
    Kernel Stacks:1785856
    PageTables:29204480
    Kalloc.Large:11616404
    unloaded kexts:
    com.apple.iokit.IOUSBMassStorageClass          2.0.8 - last unloaded 78388390721999
    loaded kexts:
    com.symantec.kext.fw          1.0.3f5
    com.symantec.kext.confidentialData          1.3f44
    com.symantec.kext.filesecurity          1.3.3f65
    com.symantec.kext.SymAPComm          11.1.2f17
    com.symantec.kext.pf          4.1.1f13
    com.symantec.kext.ips          3.2f8
    com.symantec.kext.internetSecurity          1.3.2f5
    com.apple.driver.iTunesPhoneDriver          1.0 - last loaded 78264274723293
    com.apple.iokit.IOUSBMassStorageClass          2.0.8
    com.apple.filesystems.msdosfs          1.5.5
    com.apple.driver.AppleHWSensor          1.9d0
    com.apple.filesystems.autofs          2.0.2
    com.apple.driver.AppleUpstreamUserClient          2.7.5
    com.apple.driver.AppleHDA          1.7.1a2
    com.apple.iokit.IOBluetoothSerialManager          2.1.9f10
    com.apple.GeForce          5

  • Why does the "Computer Name" sometimes change?

                    Not a big deal, just curious, why does the "computer name" sometimes change?
                     The name will be the same, but it will add a number....2,3,4...I always change it back so it doesn't have a numeric value next to it, but just wondering why it happens.
                                            Thanks.

    Can also occur after your computer is put to sleep and then wakes back up or after your computer is force quit and immediately restarted. Sometimes the router 'believes' the computer is still connected when it actually isn't. When that computer re-establishes a connection the router 'tells' the computer that a computer with that name already exists so it has to change its name. By default a computer running MacOS adds a number (or increments its number) when this happens.

Maybe you are looking for