Example: Pavilion dv9720us: shortage of pilots after update

Similar Questions

• 11-n001tu x 360 PC Pavilion: 11-n001tu x 360 HP Pavilion touchscreen does not work after updating drivers

  Touch screen of my laptop does not work after update my drivers to date. I opened Tablet PC setting, he said: "there is no pen or touch input available for this view. (I used the shortcut to open the parameter because the Tablet PC set disappeared into the control panel as well as the features of the touch screen). I tried to make a recovery, but it has failed to bring to the touch.

  In addition, the HID-Compliant touch screen driver is missing.

  Please help me solve this problem, thank you.

  Hi there @BryanHech,

  Thank you for joining the Forums HP's Support and welcome! It is a great place to ask questions, find solutions and get help from others in the community! I read your post on the Forums of HP Support. I wanted to join you and help! I understand that your touch screen has stopped working after update the drivers on your laptop PC HP Pavilion 11 - n001tu x 360 .

  How you did update the drivers?

  You use Windows Update?

  Have you checked to see if the driver has been disabled?

  Have you tried to run the Troubleshooter in Windows?

  Have you tried to do a hard reset?

  Have you tried a update the BIOS and graphics driver?

  Have you tried to perform a screen touch diagnosis the HP Hardware Diagnostic tests?

  Have you tried to Configure the display key?

  Have you tried to activate the driver in touch screen device manager?

  Please follow these steps to see if you can activate the touch screen:

  • Open the Device Manager
  • Find "Human Interface Devices"
  • Expand "Human Interface Devices"
  • Right-click on "touch screen HD compliant."
  • Click 'Activate' (if available)
  • Restart your laptop.

  If losing your touch screen happened after you had made a set of Windows updates, use the system restore feature and choose a date that was before the problems began.

  To use the system restore in Windows:

  • Go to the Search
  • Type of Control Panel
  • Click on Control Panel
  • Click System
  • Click on the System Protection
  • Click the System Protection tab
  • Click on System Restore
  • Click Next
  • Choose a restore point
  • Click Next
  • A box that says "once started, the system restore cannot be interrupted. Do you want to continue? ' displays
  • Click Yes to confirm

  When the system restore is complete, you'll be up a pop that says that it has been completed.

  Please let me know if I answered your question by clicking the "Thumbs up" if the troubleshooting in this post steps solves the problem for you please click on the button "Accept as Solution" . This will allow to the others is that present the same problem a solution also. If you need assistance, I would be more than happy to continue to help you. Please just re-post with the results of the resolution of the problems.

  Thank you!

• Pavilion G6: Error Code 43 after update Intel HD graphics card

  Hello.

  My laptop HP Pavilion G6 consists of cards 2 graphs: 1-Intel HD Graphics Family

  2 Radeon HD 6470 M

  Today, I opened my device manager, and I tried to update my Intel HD Graphics. Finally, there is an update for it, and after it was done, it displays Intel HD Graphics 3000 This is after I restarted my computer.

  After the reboot, my Intel map updated. However, I have re open Device Manager, and I see that the Radeon HD 6470 M has an exclamation mark above. I opened the properties and I see a message saying: Windows has stopped this device because it has reported issues (Code 43). This has happened after that I updated my Intel card.

  I fixed it with the restoration of the system. But can someone tell me why this happened? The Assistant de Support HP r says there is no update available, Device Manager must therefore determine that the card Intel is up to date.

  Any help? Thank you.

  Try here Intel driver update utility:

  http://www.Intel.com/p/en_US/support/detect?IID=dc_iduu

• Dv8t-1100 CTO entertainment No.: shortage of pilots after Conversion Windows 10

  Thanks for any help with my problem. Model # VF836AV. Windows 7 Pro upgrade system

  After the upgrade to Windows 10 Pro, I have 5 devices without drivers. Before I converted, I ran the compatibility check and everything checked ok. I have not determined what happens if problems initially except when I stopped the system I get a sound similar to disconnect a direct contact with speaker. I don't know if this is related to the missing drivers.

  1. three basic features are missing drivers. Descriptive information for each as follows:

  Locations for all three respectively the bus PCI - bus PCI 5, device 0, function 3-5, device 0, function 4 - PCI bus 5, device 0, function 1

  Details for the three only show words - Base system device

  The events show - PCI\VEN_197B & DEV_2383 & SUBSYS_7001103C & REV_00\4 & 4b307a9 & 0 & 03E4 still requires installation. -Device PCI\VEN_197B & DEV_2384 & SUBSYS_7001103C & REV_00\4 & 4b307a9 & 0 & 04E4 requires new installation. - PCI\VEN_197B & DEV_2382 & SUBSYS_7001103C & REV_00\4 & 4b307a9 & 0 & 01E4 requires also the installation.

  2. multimedia Controller

  Location - PCI bus 4, device 0, function 0

  Details - Multimedia controller

  Events - Camera PCI\VEN_1131 & DEV_7160 & SUBSYS_10551461 & REV_03\4 & 2eda59c2 & 0 & 00E3 requires installation.

  3 unknown Device

  Location - on PCI Express Root Complex

  Details - ACPI\HPQ0004\3 & 11583659 & 0

  Events - Camera ACPI\HPQ0004\3 & 11583659 & 0 requires installation.

  I ran the HP Wizard and he finds no updates for my system configuration. I'm not sure what I am looking for drivers or where to find them. I'm not familiar with the basic system devices. I saw in the forum where other configurations had the same problems, with links to driver for the solution, but none for my setup. Any help will be appreciated. Thank you

  gwashing

  You are the very welcome.

  The multimedia controller is the TV tuner and if the pilot I posted did not work, there is no other alternative.

  Try navigating to the folder of the driver that was created when you ran the driver and see if it installs like that.

  The unknown device 0004 must have installed using the latest driver that I posted (3D driveguard).

  Try also to manually install this driver.

• HP Pavilion Notebook: No more Wifi after update realtek wireless LAN drivers

  Thus, HP support Assistant said I had to update the 7 things. Including RealTek Wireless LAN drivers. After having done that, I've disconnected my wireless network. When I click on the internet icon in the bar below, it shows only a "Airplane Mode" button and that's it. Before, it would also show all available networks. I don't know what I have to do, but I need a quick fix!

  Peppers

  Hello;

  Let me welcome you on the HP forums!

  I read your post about the loss of WiFi after a driver update and wanted to help.

  I see that you are running Win10.  Then, click the start menu and open the Device Manager.

  When you find the wireless network device, try rolling back the drivers to the previous version.  With a little luck, after you do this and you reboot, the WiFi will work again.

  And if it works, then disable HP Support Assistant so it won't mess up your drivers more.

  Good luck

  I'm a volunteer and I do not work for, or represent, HP.
  ========================================================================
  If you feel that my suggestions helped you, please click on the thumbs-up symbol to say thank you!

  If they helped to solve your problem, please click 'Accept as Solution' to help others find similar information.

• Pavilion DV6 6154 TX: Problems after update to windows 10

  I upgraded my OS from windows edition laptop home premium windows 10. Then, I am facing so many problems with OS (black screen, striking cursor before start up and bluetooth disabled and not able to update to the new version of Bluetooth).
  
  So I think going to the earlier version of windows, but I have some doubts in this regard. Please find me answers to the following questions.
  
  (1) if I come back to windows 7, will solve my problems?
  (2) if suppose I have restored to windows 7 to 10, I was able to again update windows 7 10 may?

  dabbada wrote:
  
  (1) if I come back to windows 7, will solve my problems?
  (2) if suppose I have restored to windows 7 to 10, I was able to again update windows 7 10 may?

  Hello

  Thanks for posting in the Forum from HP Support.

  REP 1) If you didn't have a problem with Windows 7 but only with Windows 10, probably the problems resolve and will not happen on Win 7. I can't guarantee 100% but it seems normal.

  REP 2) Yes, if you go back to your previous operating system (aka Win 7), you will be able to try to Win 10 later if you wish.

  A few tips:

  > > If you want to try to solve your problems of Windows 10 without going back to Win 7, you can try to download/install HP Support Assistant

  http://WWW8.HP.com/us/en/campaigns/hpsupportassistant/hpsupport.html

  http://support.HP.com/us-en/document/c03467905

  Please, download it, it's about 39 MB, run it and update all the drivers and all of the HP software.

  Please, go to the control panel and make sure that your Windows is fully updated

  > > If this is not enough, here are the instructions how to return to Win 7 (they only work if you upgraded to Win 10 in the last 30 days):

  http://www.howtogeek.com/220723/how-to-uninstall-Windows-10-and-downgrade-to-Windows-7-or-8.1/

  http://Windows.Microsoft.com/en-us/Windows-10/going-back-to-Windows-7-or-Windows-81

  Once you return to Win 7 and if you later decide to reinstall Win 10, note that the free update will be available until the fall of 2016. Here are the instructions how to upgrade to Windows 10 (please use the USB/ISO method) > > http://support.hp.com/us-en/document/c04730900

• HP Elite Book 8460p: shortage of pilots after the Installation of 32-bit Windows 7 Home Premium HP EliteBook 8460p Base model No.

  Lack of drivers after installing Windows 7 Home Premium 32-bit
  
  Basic HP EliteBook notebook PC model 8460 p
  
  Model #: WX562AV
  
  [personal information]
  
  1. base device driver
  
  PCI Slot 2 (bus PCI 36, device 0, function 1)
  
  PCI\VEN_197B & DEV_2392 & SUBSYS_161C103C & REV_30
  
  PCI\VEN_197B & DEV_2392 & SUBSYS_161C103C
  
  PCI\VEN_197B & DEV_2392 & CC_088000
  
  PCI\VEN_197B & DEV_2392 & CC_0880
  
  
  
  1 unknown Devices
  
  It is said that
  
  ACPI\HPQ0004
  
  * HPQ0004
  
  
  
  2 unknown Device
  
  USB\VID_138A & PID_003C & REV_0086
  
  USB\VID_138A & PID_003C

  Hello

  In the order displayed, you need:

  Card reader driver.

  HP 3D DriveGuard.

  Validity sensor driver.

  Kind regards

  DP - K

• HP Pavilion Notebook - 15-p206: WiFi lost after updating the BIOS of HP Pavilion Notebook - 15-p206tx on windows 10

  Hello
  
  WiFi lost after updating the BIOS of HP Pavilion Notebook - 15-p206tx on windows 10.

  Update driver BIOS update effective system is rebooted and the wifi does not.
  
  Please help me.

  In the box to Ask Me whatever it is next to the Windows icon, type in "Installed updates", and then click view installed updates.

  Select the update that is dated from when you had the question.

  Click it to uninstall.

  You have to restart the laptop afterwards.

• After update my iPad Pro with 9.3 iOS iPad crashes on safari. For example I googled something results appear, but I am not able to enter any page, because the iPod does not respond

  After update my Pro iPad with iOS 9.3 iPad crashes on Safari. Example I googled something results appear, but I am not able to enter any page

  It seems that it is a result of the update. Other users report it, and I also read that Apple is aware of the problem and working on a fix. Be patient and watch for an update. Some have reported that disabling Java script has worked for them. You need to check yourself.

• Pavilion dv6: 10 for Windows upgrade fails Pavilion dv6 after update and entry of password

  After updating my Pavilion dv6 Windows 7 64 - bit of Windows 10 64 - bits, the connection to the computer to update resulted in a machine stuck with white (gray) screen. The upgrade seems complete without any problems. It is only after a reboot with the machine being upgraded and after entering the password that the lock status was encountered.

  You can see if any of the suggestions in the linked thread works - but DV6 succeed well in Win10, and if none of these work, you need to consider restoring to Win7: HP Notebook PC - computer starts but the screen remains empty (10, 8 Windows) | HP® customer support

  I have a DV6 and after many hardships, restored to Win7 because I felt that an older OS where everything worked was much higher than a more recent OS where many things were "broken."

  And there is no driver HP Win10 for the DV6.

• Pavilion g6-2215sia: CARD without WIRE NOT DETECTED AFTER UPDATE BIOS

  Recently I have updated my BIOS on my laptop HP Pavilion g6-2215sia think he'll adjust the hardware acceleration feature missing in my system (there is no option in my BIOS to enable virtualization technology). My BIOS version was F.12 and I've updated to F.24, but after update BIOS all my wireless functionality no longer works (including my wifi and bluetooth), and still there is no option to enable virtualization technology in my BIOS settings. On my Windows 8.1 x 64 Pro wifi and bluetooth options are grayed out so I can't turn them on or off. I tried to reinstall my bluetooth driver, but the software says that it doesn't detect any bluetooth hardware. Even when I restart and boot in all my Linux distributions installed on my system (Ubuntu, Quina and Kali Linux) and my x 86 Android, they still do not detect my wireless capability (says Ubuntu, "wifi is disabled by hardware switch").

  To confirm that this was not a software problem, I has conducted an audit of start-up and tested for my wireless module and got this result, "without WIRE MODULE CHECK: NOT INSTALLED". The only way I can get my Windows operating system to recognize my wireless (wifi and bluetooth) is now by doing a hard reset, when I unplug my laptop from the power supply, remove the battery and hold the power button for about 30 seconds. When I turn on my system, then I can turn my wifi/bluetooth on my Windows. But if I restart my system the problem comes back and I can't turn on my wireless. So basically, I have to avoid questioning my system off and only Hibernate, so that whenever I turn on my laptop I can use the wireless. If I restart my system so I have to repeat the hard reset in order to use my wifi/bluetooth, which can be very annoying.

  The problem is that I often use my other Linux disributions and I have to restart before starting in them so that my readers will be mounted read/write, and when I do my Linux can not detect my wireless and it's a serious pain for me because I need to use my wireless often for internet connection.

  Please I really need help on how to fix this and get my wireless working normally without having to do a hard reset every time. I tried to restore my BIOS F.12 unfounded but I don't have the image file (I extensively searched the Internet to find, but does not). I've even updated again to F.26 but I still have the same problem (my current version of BIOS is F.26).

  If you see no updates the BIOS in your list of drivers - where do you have the updates to the BIOS, you used?

  Try here - if you do not see the list of the BIOS, use the "Edit" button to change Windows 8.1 to Windows 8:

  http://support.HP.com/us-en/drivers/selfservice/HP-Pavilion-G6-2200-notebook-PC-series/5296082/model/5315061

• HP Pavilion TouchSmart 14-n013: touch not working after updates on Windows

  Hello

  My touch screen stopped working after updates of Windows on my laptop froze. I went through all the parameters of the pen and touch, and others to resolve this issue, and unfortunately it still does not. I also rebooted the laptop to factory settings and update all the necessary things in the software updated and updates on the HP site recommended and I've updated the BIOS, but still the touch screen does not work.

  I hope you can help.

  Thank you

  According to the message that you have recently published, I want to confirm that this could be a hardware problem and I highly recommend to Contact HP immediately technical support by phone for further assistance immediately to get your Notebook diagnosed and repaired by an authorized HP Certified Engineer

  You can also check your warranty here to check the status of the guarantee

  Hope this helps, for other queries in response to the post and feel free to join us again

  * Click on the star of CONGRATULATIONS on the left to say thank you *.

  Make it easier for others to find solutions by checking a response "Accept as Solution" if it solves your problem.

  Thank you

  K N R K

  Although I am an employee of HP, I speak for myself and not for HP

• I got the blue screen after update

  Hello. I got a bluescreen error after update my entire system today. He wrote:

  Signature of the problem:
  Problem event name: BlueScreen
  The system version: 6.0.6002.2.2.0.768.3
  Locale ID: 1030

  More information about the problem:
  BCCode: 116
  BCP1: 85F5C510
  BCP2: 8E813DE0
  BCP3: 00000000
  BCP4: 0000000D
  OS version: 6_0_6002
  Service Pack: 2_0
  Product: 768_1

  And continued to restart every time I went into IE games, etc.
  What should I do?

  Hello

  Have you updated your screen/video or other great drivers latetly - check in Control Panel.
  Updates of Windows to see if a driver has been loaded it. Use this generic utility below
  and when you get to the section driver use the methods in the next message and then back to
  the troubleshooter as needed. In rare cases, antivirus/antispyware/security programs can
  cause this error.

  Also check with the support of system Maker and video/display of the map because he could be called
  questions - also check in their forums.

  BCCode: 116 0 x 00000116

  Bug VIDEO_TDR_ ERROR control has a value of 0 x 00000116. This indicates that an attempt
  to reset the display driver and recover a time-out has failed.

  BCCode: 116 0 x 00000116<-- read="" this="">
  * 1275.html http://www.faultwire.com/solutions-fatal_error/attempt-to-Reset-the-Display-Driver-and-recover-from-0x00000116-

  --------------------------------------------------------------------------------

  Check this thread for more information using BlueScreenView, MyEventViewer and other methods
  to troubleshoot the BlueScreens - top 3 responses (+ 1 other).

  http://social.answers.Microsoft.com/forums/en-us/vistarepair/thread/3deab2fa-4000-4136-8c78-a3d22b1db009

  We can analyze the minidumps if make you it available the onedrive or another file
  sharing sites (such as MediaFire). If you have problems to download the copy of minidumps
  for the office or in the Documents folder and download them from there. (Analysis of thethe)
  Minidumps is not necessary that you have updated the video drivers because it is
  very often the cause of the issue and only if the BSODS continue.)
  

  Adding files to your OneDrive
  http://Windows.Microsoft.com/en-us/Windows-8/getting-started-onedrive-tutorial

  A disk - sharing files and folders and change the permissions
  http://Windows.Microsoft.com/en-us/onedrive/share-file-folder

  ZIP or download the content of the C:\Windows\minidump

  Use OneDrive to upload collected files

  http://social.technet.Microsoft.com/forums/en-us/w7itproui/thread/4fc10639-02dB-4665-993a-08d865088d65

  -------------------------------------------------------------------------

  Also this, so you can see the probable bluescreens.

  Windows Vista restarts automatically if your computer encounters an error that requires him to plant.
  (also Windows 7)
  http://www.winvistatips.com/disable-automatic-restart-T84.html

  ---------------------------------------------------------------------------------------------------

  The inclusion of 116 error in the troubleshooting code is the only coincidence and holds no.
  special meaning (other than pilot caused bluescreens occur with some frequency).

  Look in the Event Viewer to see if something is reported on those.
  http://www.computerperformance.co.UK/Vista/vista_event_viewer.htm

  MyEventViewer - free - a simple alternative in the standard event viewer
  Windows. TIP - Options - Advanced filter allows you to see a period of time
  instead of the entire file.
  http://www.NirSoft.NET/utils/my_event_viewer.html

  -------------------------------------------------------------------------

  Here are a few ways to possibly fix the blue screen issue. If you could give the blue screen
  info that would help. Such as ITC and 4 others entered at the bottom left. And all others
  error information such as codes of STOP and info like IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.

  As examples:

  BCCode: 116
  BCP1: 87BC9510
  BCP2: 8C013D80
  BCP3: 00000000
  BCP4: 00000002

  or in this format:

  Stop: 0 x 00000000 (oxoooooooo oxoooooooo oxoooooooo oxooooooooo)
  Tcpip.sys - address blocking 0 x 0 00000000 000000000 DateStamp 0 x 000000000

  It is an excellent tool for displaying the blue screen error information

  BlueScreenView scans all your minidump files created during 'blue screen of death '.
  hangs and displays information about all accidents of a table - free
  http://www.NirSoft.NET/utils/blue_screen_view.html

  BlueScreens many are caused by old or damaged, in particular the video drivers drivers however
  There are other causes.

  You can do without if needed fail or the Vista DVD or recovery command prompt mode
  Options if your system was installed by the manufacturer.

  This tells you how to access the System Recovery Options and/or a Vista DVD
  http://windowshelp.Microsoft.com/Windows/en-us/help/326b756b-1601-435e-99D0-1585439470351033.mspx

  You can try a system restore to a point before the problem started when one exists.

  How to make a Vista system restore
  http://www.Vistax64.com/tutorials/76905-System-Restore-how.html

  -------------------------------------------------------------------------

  Start - type this into the search-> find COMMAND to top box and RIGHT CLICK-
  RUN AS ADMIN

  Enter this at the command prompt - sfc/scannow

  How to analyze the log file entries that the Microsoft Windows Resource Checker
  (SFC.exe) program generates in Windows Vista cbs.log
  http://support.Microsoft.com/kb/928228

  The log can give you the answer if there is a corrupted driver. (Says not all the)
  possible driver problems).

  Also run CheckDisk, so we cannot exclude as much as possible of the corruption.

  How to run the check disk at startup in Vista
  http://www.Vistax64.com/tutorials/67612-check-disk-Chkdsk.html

  -------------------------------------------------------------------------

  Often drivers up-to-date will help, usually video, sound, network card (NIC), WiFi, part 3
  keyboard and mouse, as well as of other major device drivers.

  Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
  http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htm

  How to install a device driver in Vista Device Manager
  http://www.Vistax64.com/tutorials/193584-Device-Manager-install-driver.html

  How to disable automatic driver Installation in Windows Vista - drivers
  http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
  http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx

  -------------------------------------------------------------------------

  How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
  quit unexpectedly
  http://support.Microsoft.com/kb/958233

  Troubleshooting, STOP error blue screen Vista
  http://www.chicagotech.NET/Vista/vistabluescreen.htm

  Understanding and decoding BSOD (blue screen of death) Messages
  http://www.Taranfx.com/blog/?p=692

  Windows - troubleshooting blue screen errors
  http://KB.wisc.edu/page.php?id=7033

  -------------------------------------------------------------------------

  In some cases, it may be necessary.

  The Options or Vista recovery disk Startup Repair

  How to do a startup repair
  http://www.Vistax64.com/tutorials/91467-startup-repair.html

  This tells you how to access the System Recovery Options and/or a Vista DVD
  http://windowshelp.Microsoft.com/Windows/en-us/help/326b756b-1601-435e-99D0-1585439470351033.mspx

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

• Firefox screen blew up after update

  After updating, the design, layout and the text of firefox "blew up." It is too big.

  The only advice that I have always after the search has been trying to view > Zoom etc.,.

  Only, this changed the screen I was and is returned after a change to a new page, open a new tab or restart firefox.

  I need a permanent solution where the firefox screen is where it was before.

  Amendments of the code regarding the HiDPI support high-resolution displays have landed at Firefox 22 and later (bug #844604).

  You can change the layout.css.devPixelsPerPx and increase or decrease the value of 0.1 or 0.05 as follows to adjust the size of fonts and other elements in Firefox.

  • The layout.css.devPixelsPerPx pref is a string parsed in float value and allows you to adjust the dimensions of all elements (user interface and web pages) specifically (resolution 0.1 or 0.05).
  • Change the default value of-1 to 1 to make it work as in previous versions of Firefox (100%)

  Start with a value of 1 and adjust this value with 0.1 or 0.05 for finer settings.

  • Use values between 1.0 and around 0.5 to reduce the size of the items (do NOT go all the way to 0.05!)
  • Use a value greater than 1.0 to grow and enlarge the elements (percentage divided by DPI, % / DPI).
  • http://KB.mozillazine.org/about:config

  _{EDIT by Chris_ilias: to summarize:}
  

  1. In the address barof Firefox, type Subject: config , then press the Enter key.
     If the "this might void your warranty!" warning appears, click on I'll be careful, I promise! to continue.
  2. Search for the preference layout.css.devPixelsPerPx
  3. Double-click the entry and change its value of-1.0 and 1.0
     (you can change this upward or downwards if necessary, for example, 1.1 to 0.9).

  Note that the changes take effect immediately. To its default value, right-click the preference and select Reset.

  If the web pages must be adjusted after changing this pref so you can watch the extension Default FullZoom Level or NoSquint.

  • Default FullZoom Level: https://addons.mozilla.org/firefox/addon/default-fullzoom-level/
  • NoSquint: https://addons.mozilla.org/firefox/addon/nosquint/

  This extension allows to adjust the font size for the user interface:

  • Theme font & size changer: https://addons.mozilla.org/firefox/addon/theme-font-size-changer/

• App Store apps titles are broken after update to El Capitan

  Hello

  I met a few weird problem after update today at El Capitan. Look at the screenshot of my App Store. Some applications are broken. Examples marked with red outline.

  

  Can you help me solve this problem?

  Try starting in safe mode.

  Boot mode safe. http://support.Apple.com/kb/PH18760