USB keyboard problem

Similar Questions

• Satellite A300D keyboard problem after using an external USB keyboard

  I use a Satellite A300D series laptop and while at home, I use a UBS keyboard on it, but once the laptop is used without a USB keyboard only some of the keys seem to work, I get number 6 when I press the i key.

  I thought that this could be because the USB keyboard would not have been arrested properaly when I unplugged and the portable thought he was always there, but even after the stop of the USB keyboard is the same!

  All the answers to my problem?

  Hello

  On my Satellite A300, I can get 3 when I press L. It can be done if you are using the FN + F11 key combination.
  Perhaps this option enabled on your laptop?

• I AM NOT the LIVEDOCK HELP because of a quality problem with USB keyboards, you can fix it?

  I have a Xperia Arc and I bought an accessory DK10 and I try to use a USB mouse and USB keyboard with it, , but I'm not able to change the language of the USB keyboard-.

  It is a problem of QUALITY because that this limitation is not announced with the product.

  For this reason, I'M NOT to the HELP of LIVEDOCK.

  Y at - it a possiblity that solve you this problem? (for example, by using the language settings and the keyboard of the phone that will use Android)

  This will help many users who do not use U.S. English keyboards.

  I write in this forum because I could not any kind of help in the chat support or support by mail.

  At the time Android supports only English keyboard using an external keyboard, but I know that our developers are looking into this and try to add other provisions of keyboard as well.

• Mounting USB keyboard freezes internal keyboard and trackpad

  Hello world

  Spent an hour looking for a solution to this so I hope this isn't a problem of repetition. I am using a wired USB keyboard (DYNEX model No.: DX-WKBDSL) with my MBP end 2011, but whenever I have set and keyboard Setup Assistant appears my internal trackpad immediately stops responding and my internal keyboard sounds fair to me if I tap on a button. This keeps me from hitting continue setting. If I unplug the USB keyboard, I immediately regain control of my internal input devices. Disks hard USB and flash drives cause no problems. I need to be able to use my usb full keyboard, so I have a 10 key. Can someone help me?

  I noticed the guys like the thing EtreCheck here so I just ran on my machine (obviously without my keyboard usb attached since that would freeze everything). I hope that helps!

  EtreCheck version: 2.9.13 (267)

  Report generated 2016-08-18 10:55:47

  Download EtreCheck from https://etrecheck.com

  Time 04:12

  Performance: good

  Click the [Support] links to help with non-Apple products.

  Click [details] for more information on this line.

  Problem: Another problem

  Hardware Information: ⓘ

  MacBook Pro (13 inch, late 2011)

  [Data sheet] - [User Guide] - [warranty & Service]

  MacBook Pro - model: MacBookPro8, 1

  1 2.8 GHz Intel Core i7 CPU: 2 strands

  4 GB of RAM expandable - [Instructions]

  BANK 0/DIMM0

  OK 2 GB DDR3 1333 MHz

  BANK 1/DIMM0

  OK 2 GB DDR3 1333 MHz

  Bluetooth: Old - transfer/Airdrop2 not supported

  Wireless: en1: 802.11 a/b/g/n

  Battery: Health = Normal - Cycle count = 588

  Video information: ⓘ

  Intel HD Graphics 3000

  Color LCD 1280 x 800

  Software: ⓘ

  OS X El Capitan 10.11.6 15G (31) - time since started: about 31 days

  Disc information: ⓘ

  APPLE HDD HTS547575A9E384 Disk0: (750,16 GB) (rotation)

  EFI (disk0s1) < not mounted >: 210 MB

  Recovery HD (disk0s3) < not mounted > [recovery]: 650 MB

  Macintosh HD (disk 1) /: 748,93 go-go (559,33 free)

  Storage of carrots: disk0s2 749.30 GB Online

  MATSHITADVD-R UJ - 8À8)

  USB information: ⓘ

  Computer, Inc. Apple IR receiver.

  Apple Inc. FaceTime HD camera (built-in)

  Apple Inc. Apple keyboard / Trackpad

  Apple Inc. BRCM2070 hub.

  Apple Inc. Bluetooth USB host controller.

  Lightning information: ⓘ

  Apple Inc. Thunderbolt_bus.

  Guardian: ⓘ

  Mac App Store and identified developers

  Kernel extensions: ⓘ

  / System/Library/Extensions

  com [no charge]. ZTE.driver.ZTEUSBCDCACMData (ZTEDriver_MacV1.3.9 - 2016-07-18) [Support]

  [no charge] com.devguru.driver.PTUMWDrv (1.2.64230.128 - 2016-07-18) [Support]

  [no charge] com.lge.driver.LGEMobilSolutionFamily (1.5.4.0421 - 2016-07-18) [Support]

  [no charge] com.novatelwireless.kext.wwan (v3.0.24 (001)-2016-07-18) [Support]

  [no charge] com.pantech.driver.PTRayUSBFamily (1.1.7.0616 - 2016-07-18) [Support]

  com.sierrawireless.driver.SierraDevSupport [no charge] (2.0.2.0 - 2016-07-18) [Support]

  com.sierrawireless.driver.SierraFSCSupport [no charge] (2.0.2.0 - 2016-07-18) [Support]

  com.sierrawireless.driver.SierraFSRSupport [no charge] (2.0.2.0 - 2016-07-18) [Support]

  com.sierrawireless.driver.SierraHSRSupport [no charge] (2.0.2.0 - 2016-07-18) [Support]

  com.smithmicro.driver.SMSIWirelessModem [no charge] (3.2.7 - 2016-07-18) [Support]

  /System/Library/Extensions/LGEMobileSolutionFamily.kext/contents/plugins

  [no charge] com.lge.driver.LGELTEBus (1.5.4.0421 - 2011-06-21) [Support]

  [no charge] com.lge.driver.LGELTEMdmControl (1.5.4.0421 - 2011-06-21) [Support]

  [no charge] com.lge.driver.LGELTEMdmData (1.5.4.0421 - 2011-06-21) [Support]

  [no charge] com.lge.driver.LGELTENicControl (1.5.4.0421 - 2011-06-21) [Support]

  [no charge] com.lge.driver.LGELTENicData (1.5.4.0421 - 2011-06-21) [Support]

  /System/Library/Extensions/NovatelWirelessWWAN.kext/contents/plugins

  com [no charge]. NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (v3.0.24 (001)-2011-06-21) [Support]

  com [no charge]. NovatelWireless.driver.NovatelWirelessUSBCDCECMData (v3.0.24 (001)-2011-06-21) [Support]

  [no charge] com.novatelwireless.driver.3G (v3.0.24 (001)-2011-06-21) [Support]

  [no charge] com.novatelwireless.driver.3GData (v3.0.24 (001)-2011-06-21) [Support]

  [no charge] com.novatelwireless.driver.DisableAutoInstall (v3.0.24 (001)-2011-06-21) [Support]

  [no charge] com.novatelwireless.driver.NWVBE (v3.0.24 (001)-2011-06-21) [Support]

  /System/Library/Extensions/PTRayUSBFamily.kext/contents/plugins

  [no charge] com.pantech.driver.PantechBus (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.PantechCDFree (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.PantechCm (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.PantechMdmControl (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.PantechMdmData (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.PantechSer (1.1.7.0616 - 2011-06-21) [Support]

  [no charge] com.pantech.driver.QmiDriver (1.1.7.0616 - 2011-06-21) [Support]

  /System/Library/Extensions/PTUMWDrv.kext/contents/plugins

  [no charge] com.devguru.driver.PTUMWCDFree (1.2.64230.128 - 2011-06-21) [Support]

  [no charge] com.devguru.driver.PTUMWCSP (1.2.64230.128 - 2011-06-21) [Support]

  [no charge] com.devguru.driver.PTUMWDIAG (1.2.64230.128 - 2011-06-21) [Support]

  [no charge] com.devguru.driver.PTUMWMdmControl (1.2.64230.128 - 2011-06-21) [Support]

  [no charge] com.devguru.driver.PTUMWMdmData (1.2.64230.128 - 2011-06-21) [Support]

  [no charge] com.devguru.driver.PTUMWUSBMergeNub (1.2.64230.128 - 2011-06-21) [Support]

  /System/Library/Extensions/SMSIWirelessModem.kext/contents/plugins

  com.smithmicro.driver.SMSIWirelessCDC [no charge] (3.2.7 - 2011-06-21) [Support]

  com.smithmicro.driver.SMSIWirelessSerial [no charge] (3.2.7 - 2011-06-21) [Support]

  Launch system officers: ⓘ

  [loaded] 8 tasks Apple

  [loading] 145 tasks Apple

  [operation] 63 tasks Apple

  [killed] 22 tasks Apple

  the 22 killed process lack of RAM

  Launch system demons: ⓘ

  com.Apple.Security.syspolicy.plist [failure]

  [loaded] 48 tasks Apple

  [loading] 150 tasks Apple

  [operation] 80 tasks Apple

  [killed] 12 tasks Apple

  12 killed process lack of RAM

  Launch officers: ⓘ

  [no charge] com.adobe.AAM.Updater - 1.0.plist (2014-02-01) [Support]

  [loading] com.google.keystone.agent.plist (2016-07-11) [Support]

  [no charge] com.oracle.java.Java - Updater.plist [Support]

  [operation] com.rosettastone.rosettastonedaemon.plist (2014-12-26) [Support]

  [loading] org.macosforge.xquartz.startx.plist (2014-08-11) [Support]

  Launch demons: ⓘ

  [loading] com.adobe.SwitchBoard.plist (2012-06-10) [Support]

  [failure] com.adobe.fpsaud.plist (2016-06-13) [Support]

  [loading] com.google.keystone.daemon.plist (2016-07-11) [Support]

  [loading] com.microsoft.office.licensing.helper.plist (2010-08-25) [Support]

  [no charge] com.oracle.java.Helper - Tool.plist [Support]

  [loading] org.macosforge.xquartz.privileged_startx.plist (2014-08-11) [Support]

  User launch officers: ⓘ

  [loading] com.adobe.AAM.Updater - 1.0.plist (2012-06-10) [Support]

  [loading] com.adobe.ARM. [...]. plist (2013-11-11) [Support]

  [loading] com.adobe.ARM. [...]. plist (2015-05-19) [Support]

  com.apple.CSConfigDotMacCert [fail]-[...] @me.com - SharedServices.Agent.plist

  [operation] com.spotify.webhelper.plist (2016-07-05) [Support]

  [loading] com.vladalexa.MagicPrefs.plist (2016-07-18) [Support]

  Items in user login: ⓘ

  smcFanControl Application (/ Applications/smcFanControl.app)

  Workflow application (/ Applications/Flux.app)

  Stickies application (/ Applications/Stickies.app)

  Other applications: ⓘ

  [operation] com.adobe.PDApp.AAMUpdatesNotifier.65632.B69CDC4F-01B7-4A73-8B33-DA81B56745F1

  [ongoing] com.eidac.smcFanControl2.63392

  [ongoing] com.etresoft.EtreCheck.108192

  [ongoing] com.microsoft.Excel.55392

  [ongoing] com.microsoft.Office365Service.60192

  [ongoing] com.microsoft.Word.56032

  [ongoing] com.Microsoft.AutoUpdate.FBA.2912

  [ongoing] org.herf.Flux.88992

  [loading] 435 tasks Apple

  [operation] 177 tasks Apple

  [killed] 39 tasks Apple

  Plug-ins Internet: ⓘ

  AdobeExManDetect: AdobeExManDetect 1.1.0.0 - SDK 10.7 (2014-02-01) [Support]

  FlashPlayer - 10.6: 22.0.0.192 - SDK 10.9 (2016-07-06) [Support]

  QuickTime Plugin: 7.7.3 (2016-07-18)

  AdobePDFViewerNPAPI: 11.0.11 - SDK 10.6 (2015-05-13) [Support]

  AdobePDFViewer: 11.0.11 - SDK 10.6 (2015-05-13) [Support]

  Flash Player: 22.0.0.192 - SDK 10.9 (2016-07-06) obsolete! Update

  Default browser: 601 - SDK 10.11 (2016-07-18)

  SharePointBrowserPlugin: 14.4.5 - SDK 10.6 (2014-10-28) [Support]

  Silverlight: 5.1.40728.0 - SDK 10.6 (2015-09-28) [Support]

  DirectorShockwave: 12.2.0r162 - SDK 10.6 (2015-08-31) [Support]

  JavaAppletPlugin: 15.0.1 - 10.7 (2016-07-20) check the version of the SDK

  Safari extensions: ⓘ

  AdBlock - BetaFish, Inc. - https://getadblock.com (2015-11-22)

  3rd party preference panes: ⓘ

  Flash Player (2016-06-13) [Support]

  MagicPrefs (2012-10-17) [Support]

  Time Machine: ⓘ

  Time Machine not configured!

  Top of page process CPU: ⓘ

  7% com.apple.WebKit.WebContent (4)

  4% safari

  kernel_task 2%

  1% WindowServer

  1% systemstatsd

  Top of page process of memory: ⓘ

  754 MB com.apple.WebKit.WebContent (4)

  523 MB kernel_task

  Safari of 303 MB

  Mdworker (10) 123 MB

  90 MB softwareupdated

  Virtual memory information: ⓘ

  68 MB free RAM

  used 3.93 GB RAM (620 MB cache)

  406 MB used Swap

  Bumping this because I really need an answer.

• Keyboard problems

  Hello

  I run a 27 "iMac with OS X.10.5.  My wired keypad (MB110B/B) has recently developed a problem.

  It seems to start in Excel that will be there normally and then it will begin to enter letters instead of numbers (on the keyboard extended & main).  The main qwerty keyboard letters are also scrambled / incorrect match.  After a minute or two, the computer will spontaneously shutdown (black screen, no warning) and then start to restart.

  I tried to unplug the keyboard, reset the default keyboard preferences.  Recently, I ran disk utility & apart from a few problems of preferences, there is nothing significant.

  I know that's not good to go.  I'm happy to help diagnose problems.  I just hope that this sounds familiar to anyone with a solution!

  Thank you.

  jHuckstep,

  The most common solution is to do a Reset of the MSC. It's very simple to make and instructions can be found in iMac SMC and PRAM reset. Sometimes it takes 2-3 attempts for resets it to work. If it fails after 2-3 resets, then please try another USB keyboard to see if your original keyboard is a failure, they can and wear out.

• Portege R830 - Trackpad/keyboard problem

  HI - hope someone can help because I have only a few strands of hair left out!

  In the last two weeks, a problem has developed with the trackpad - and maybe my keyboard. Here are some of the symptoms

  1. the cursor on the screen suddenly freezes. If I leave the laptop and work back, and it's not.

  2. If I tap on the keyboard (can simply press the keys or I could be typing in a document) and the cursor may freeze again. During this event the little 'mouse/trackpad' power icon flashes briefly on the screen. If I hit another key (literally anywhere on the keyboard) a number of times (not the model number) the icon can cycle and the slider moves and then freeze again.

  It's as if each key on the keyboard is somehow the role of the FnF9 key.

  Unfortunately I took the laptop on a business trip recently and this time after initialization the laptop - the cursor was frozen and no amount of pressure button thoughtful or random didn't get going. It is a working battery. That scared the hell out of me.

  If I plug in a USB keyboard and mouse and then pressing the keys on this keyboard does not cause the cursor to freeze. But he can do anyway - as described in 1. above.

  The F9 key will unlock the cursor (I guess re - turn on the trackpad) - but it won't be long before cycle back again.

  I did not drop the phone. There is nothing physically wrong with her. The battery holds its charge and it starts successfully. I did no change of material during the month.

  The only button on the keyboard that is not working is the mouse/trackpad power button just above the space bar. It feels a bit depressed - but I think that is how it has always been. Juggle it makes no difference to this bizarre and erratic behavior. But perhaps this is relevant.

  When I tried.

  Reinstall the trackpad driver (Synaptics).

  Reinstall the PVAT (value package).

  I even tried to re-imaging of HARD drive to one of these days - and the other just after that I bought the laptop in 2012. Which should have solved if it was a software/driver problem - but it didn't.

  One thing I did not, is venturing into the BIOS. Maybe there is something in them?

  In Device Manager that everything is listed - no warning at all. There seems to be be no IRQ conflict.

  This could be a hardware problem? I read that the keyboards on R830 are quite likely to damage/stoppage of work. A the United Kingdom popular auction site has sellers who claim to have sold more than 40! That's a lot of R830s who have had new keyboards.

  I also know that a replacement is a pain, so I hope that's not it.

  Someone at - it suggestions? It makes me crazy.

  I google extensively and can't come up with anything either. There are the usual raft of people trying to find how to activate the trackpad or disable - but none seem to be struggling with the laptop made for them.

  Help!

  Hello

  According to the description of your problem, it seems that the touchpad is disabled automatically.
  As you have already mentioned, the touchpad can be enabled and disabled by using the FN + F9 key combination function

  Since you have also some keyboard problems, my theory is that there is a problem of keyboard that may be responsible for the touchpad ON / OFF question.

  What do you think of this theory?

  I put t think there is a software problem because as you already reset the system to the point in time at the beginning (factory settings?). This is why I think that the conflict of software cannot be the reason for this.

• Satellite Pro C50 keyboard problems - A - 1 L 6

  Hello

  I just bought this new Satellite Pro.

  I have installed all the drivers and updated the bios to the latest version, but I still have the same problem: when I write, many times my keyboard writes double letters (for example, all ten words written keyboard a letter double, as "keybboard").

  I tried also to change the properties of the keypad on the control panel of Windows 8, but nothing has changed.

  I called support, but they just told me that I have to bring my laptop in a helpdesk: but I need my new computer to work, and I wouldn't be happy to lose at least 4 weeks!

  And, support told me that, if the laptop has no hardware problem, I would have to pay for assistance...
  .
  So, this is my first experience and unlucy in the world of Toshiba...
  Is there someone who can give me some advice to solve this problem?
  It may be a problem running on the new laptops, and someone knows how to fix this?

  Thank you very much!

  Hi guys,.

  As far as I know that these similar keyboard problems in the past could be resolved by the BIOS updated.
  I found the new BIOS for Satellite Pro C50 - A
  http://Support1.toshiba-tro.de/Tedd-files2/0/BIOS-20140912105436.zip
  Worth a try

  Another question: If someone has done to test a USB external keyboard?
  In the case where the external USB keyboard would work correctly, this issue isn't associated with BIOS or keyboard controller but probably his keyboard fault internal.

• Satellite Pro C660 - keyboard problems

  This issue is one for computer laptop Toshiba Satellite Pro C660-1UX running Windows 7 Home Premium Service Pack 1.

  Some of the keys on Board (E, T, U, I, O, A, B, N, and the Enter key) fail to register.
  All keys tested so far seem to register normally.

  When you connect an external USB keyboard, all the keys work properly. When you use the integrated keyboard or external USB keyboard, however, pressed some key is selected for about 2-3 seconds so that his character register. This makes typing incredibly slow and is naturally unacceptable.

  I checked the Manager of devices looking for errors, but can't find one. The keyboard driver is classified properly installed and functional, and driver update indicates that the latest version is in already in service.

  I've also scanned for viruses using Spybot and Malware bytes and also with laptops own antivirus software pre-installed. All the analyses of the entire system refer a none found the message of threat.

  I read that the keyboards on these machines can sometimes be problematic, which could respond only to edge, some function keys. The fact that all the external USB keyboard keys work seems to confirm this. However, the fact that the keyboard both onboard and external is affected by the same slow pressure might also suggest a bios problem - but that this laptop computer is several years old and working perfectly, why bios suddenly would cause this problem.

  I visited the Toshiba site and based on this laptop with the part number: PSC0ME-02100SEN, I have concluded (rightly or wrongly) that the correct bios download version is 1, 70 - WIN, only when I read the following installation instructions http://aps2.toshiba-tro.de/kb0/HTD9502M10000R01.htm bios
  I became quite concerned, like installing the bios update seems far from simple.

  Does anyone know if it is possible to download and install the bios right through an update automated versus manual download and installation step by step, which, if not carried out as planned, could make the laptop completely unusable.

  Has anyone reading this post experienced similar problems with this make and model laptop and was able to return successfully to the good operating condition. If so, how?

  All constructive advice would be welcome.

  > When you connect an external USB keyboard, all keys work correctly.

  This means that the keyboard controller is OK and the internal keyboard is defective.
  To resolve this problem of keyboard, internal keyboard needs to be replaced.

  > However, the fact that the keyboard on board as external is affected by the same keypress slow could also suggest a bios problem - but this laptop computer is several years old and works perfectly, why bios suddenly would cause this problem.

  Hmm I n t think so
  The keyboard delay can be bound to parameters.
  You can check this in the control panel-> keyboard

• USB keyboard will not type certain keys

  New USB keyboard used with the (retina, end of 2015) iMac running OS X El Capitan. Some of the keys are dead. Have reset the PRAM: issue is not resolved. Have you tried the keyboard on a MacBook Air: problem does not disappear. Have checked the keyboard settings (input methods, etc.). Nothing abnormal. Any suggestions?

  HHas keyboard you wet? Just a bit of sweat to kill Apple keyboards.

• iMac restart and does not recognize usb-keyboard... freezes black screen with white bar tape

  Does anyone know this problem?... reboot does not work, usb keyboard does not work and the screen freezes...

  

  What version of Mac OS X is installed on the computer?

• Equium A200-15I keyboard problems

  Hi all

  I have recently been given the above laptop it has a keyboard very worn with a few missing keys etc... Having bought a replacement keyboard I got it replaced, and it seems to work ok except for a few problems. Close keys don't seem to work or work strangely, for example:

  -nothing happens when I press "A" key, but when I press "S" key, I find myself with "qs" appearing on the screen
  -Same problem with 'Q', when I press the button, nothing happens but if I press 'W', I find myself with a tab size space key and a 'w' but not 'q '.
  -'a' appears, along with a "when I press the button to the left of the"1"key
  -the 'X' button also does not work, but did not appear with anything else again.
  -Same with the key 'E '.
  -by pressing the '2' key fact appears "12", while pressing on the '1' works well
  -windows key, also does nothing.

  The shift and caps lock keys work fine. The keyboard was nevertheless new out a package, it is true that on ebay, but the new. I guess the main culprit could be a faulty keyboard, but the letters appear when others touch seems weird.

  If anyone else has experienced this problem or have solutions? Whatever that either would be appreciated.

  Hello

  I think you should test another external USB keyboard.
  If the USB keyboard would work correctly, the problem is related to the new internal keyboard.
  Parts bought from Ebay could be compatible or if you have bad luck, the part will be not compatible or even defective.

• On Satellite Pro L870-173 keyboard problem

  Hi, I am the owner of a laptop from the Satellite Pro L870-173.
  By writing an e-mail the keyboard functions has changed.
  Some keys have a different meaning, examples

  Space lab = o
  4 = o v4v4
  c = the optioo for a secodon display

  What can I do?
  Is originally a default keyboard?
  Do anyone have an idea?

  The system is a 6v4 - bit win8o
  The keyboard settings is always the same: German language

  Thank you very much!

  > Do someone has an idea?
  Yes, I have an idea.

  > Is originally a default keyboard?
  I m afraid, Yes.

  You can confirm my idea connection external USB keyboard to the laptop.
  In case your external keyboard would work correctly, the problem is definitely related to the internal keyboard.

• Qosmio G50 - 12 q - Vista does not load after you connect the external USB keyboard

  I could acquire an enermax acrilux usb keyboard and have connected the keyboard taken 12 q at the same level where another keyboard was attacked the qosmio g50 usb and it worked without problem.

  After to start the PC with keyboard eneramx connected the qosmio has not loaded windows vista Ultimate edition and the inside wheels have been activated.
  Never happened before. I doubted the enermax

  Reconnected to the position of the qosmio USB, there on the back not granted to start-up of turbines problems
  As the enermax, that he has never blocked the startup of the operating system and to activate turbines also have plugged into the same USB port to which priority was connected a keyboard?

  Tank you

  Hi mate

  Sorry, but you message I am really hard to understand
  What I understand is that you connected an external keyboard on the Qosmio and now the laptop will not boot properly. Is this good?

  What to say; Maybe you disable USB legacy mode in the BIOS.
  Please check this!
  To enter the BIOS press F2 and everything by turning on the laptop.

• Why my USB keyboard did stop working?

  Can some tell me why my USB keyboard stopped working after I upgraded my mac OS X EL Capitan 10.11.4?

  Seems that Apple had broken the old apple keyboard wired usb on OS X 10.11.4. New Apple wireless keyboard worked fine.

  Was not working at boot time and didn't work with windows bootcamp and did not work when started from the recovery partition, so it must be a problem with boot loader.

  Reseting EPRAM and SMC has failed.

  Time Machine restore to old 10.11.3, 10.11 install USB appears to only way to solve the problem.

  With old 10.11 usb install, because the keyboard did not work at boot time and restoring from Time Machine backup starting 10.11.4 recovery partition broke my fusion disk partition tables. I had to manually destroy disc fusion and remove partitions on the hard drive and ssd of command-line diskutil and create new logical volume of fusion in the car and after that he restore backup from Time Machine.

  Very well of the keyboard now work but lost 1 day and Windows 10/bootcamp partition in the process.

  I have iMac 27 "5 k end of 2015, but I like to use wired keyboard numpad because.

• HP Compaq DC7900 SFF - no support BIOS for USB keyboard/mouse

  I recently bought a lease out vintage 2009 DC7900-Windows 7 Home Premium running. It has connectors from the motherboard and BIOS support for a PS2 Keyboard and mouse. There also card mother support for USB but apparently BIOS does not support a USB keyboard and a mouse. Y at - it a BIOS update that adds support for USB keyboard and a mouse?

  Thank you

  Well, I found what seems to be the problem. My USB keyboard and mouse are connected to a KVM switch that in turn connects to the HP PC. The KVM cable provides keyboard and mouse via a simple USB connection. I have connected a second USB keyboard directly to another USB port, and as you say, the BIOS it supported. I then connected the USB keyboard and mouse for a simple USB hub and then to the HP PC, and BIOS does not recognize the keyboard once more. It would seem that the problem is that the BIOS of the PC HP does not support keyboard behind a USB hub connectivity. I have no detailed knowledge of USB connectivity but could guess that there must be a difference Protocol when I hub is in the Middle – obviously the PC must focus on a specific device behind the hub.

  In the end, I think I'm stuck just keep a separate keyboard (PS/2 or USB) around for those times when I need to communicate to the BIOS.

  I have another PC of the same vintage - a custom platform - and it handles the keyboard behind the hub very well. I wonder if all new PC BIOS handle this.

  Thanks again for your responses - very useful.