Thomas Northcut/Photodisc/Getty Images Related Articles [Mac] | How to Get Your Mac to Recognize a Drive [USB Memory Stick] | How to Use a USB Memory Stick on a Mac [Mac] This update addresses an issue that may prevent a USB keyboard from being recognized after the system wakes from sleep." The above is taken from the Apple Support website. Check power and cables: Make sure the USB device is turned on and its cables are properly connected. Press the "Command-Option-Esc" buttons to shut down applications that aren't responding. http://itenlightenment.com/usb-port/mac-os-x-usb-ports-not-working.html
I do know a guy called Dick though… Reply Barney Smith says: August 10, 2015 at 7:38 am I thought that you had to hold the shift-option-control keys on the LEFT Power button is not on my keyboard, I pushed my "on" button along with Shift+Control+Option, had to release the power button but held the other 3 until power light switched off Box 4260 Houston, Texas 77210–4260 © Copyright 2016 Hearst Newspapers, LLC Menu Tutorials OS Windows Linux Zorin Mac Social Media Facebook Google Plus Mobiles Android Security Software How To Play One of the best ways to troubleshoot the issue is by resetting SMC. http://innov8tiv.com/fix-macbook-mac-pro-usb-ports-not-working-problem/
Once the Mac is loaded and running check the USB ports and see if they are working properly. How can this help? Will you please guide me? All Rights Reserved. First and foremost, keep in mind that sometimes a USB device itself can fail, which may have nothing to do with the Mac itself.
Hope this helps. It seemed as if the entire system management controller is failing like anything. Press the power button to turn on the Mac laptop. Extend your MacBook battery life up to 13hrs, and never worry about finding a power outlet again with BatteryBox. One Usb Port Not Working Macbook Pro Enter your email address below: Related articles: Change MAMP to Default Apache and MySQL portsHow to Chat on AIM from Behind a Firewall with iChatSee What Files & Ports an Application
Which is also probably why the Hard Drives seem to be going bad. (They are probably fine.) I think you should think about replacement of your unit because it is only I only have a mouse, keyboard and a 1TB WD elements external drive. So in case, it can be detected that the particular USB device is deprived of a particular hardware driver that is supplied by the manufacturer in order to function properly. https://discussions.apple.com/thread/3939949?tstart=0 If one isn't that device might be faulty which can make other USB Devices not operate properly.
References (2) Apple: Resetting Your Mac's PRAM And NVRAMApple: Intel-based Macs: Resetting the System Management Controller (SMC) About the Author Kefa Olang has been writing articles online since April 2009. Usb Devices Disabled Mac My past experiences with these “Geniuses” has been less that good and I really do not thrust them. Reply DJacks says: August 12, 2015 at 11:42 am Anyone else having issues with usb to ethernet? CloudFlare Ray ID: 3019d622213953a8 • Your IP: 188.8.131.52 • Performance & security by CloudFlare Home Mac OS X iPhone iPad Tips & Tricks Jailbreak News iOS Mac USB Ports Stopped Working?
Amartya Veda Veda L is a technoholic geek, who loves to build websites, and she's a PL-SQL developer too. The light did change color on the power adapter. Macbook Pro Not Recognizing Usb Check all USB devices one at a time until you have found all the USB Devices that do not work. Imac Usb Ports Not Working I have an old Macbook Pro (early 2008), and this happens on a regular basis (loss of USB ports).
I saw no light blinking or changing color on the power adapter, but I held all the buttons down for about 60 seconds, restarted, and it worked! weblink Another Fix for USB Not Working: the NVRAM Reset Sometimes resetting the NVRAM / PRAM on a Mac can help resolve the USB port failure as well, since NVRAM holds various Visit the manufacturer’s website for any updates. but the cost of repairing may meet or exceed simply replacing the logic board with a known good board from a machine that suffered some other damage (probably damaged display) that Reset Usb Ports Mac
You might need to disconnect and reconnect the other device as well, if it has stopped responding. It comes and goes so it's hard to isolate. Release the Command-Option-P-R keys. navigate here If it doesn't work after an SMC reset, it may be actually failing or due to another issue, but you'd need to run the Apple Hardware Test diagnostics to determine that.
HomeOSMacHow to Fix USB Ports on Mac? Mac Won't Recognize Flash Drive Hold the "Command-Option-P-R" keys together before the gray screen appears until you hear the startup sound for the second time. Restart your Mac: Choose Apple menu > Restart.
SMC reset dos the trick for my USB port. In mid 2012 15″ macbook pro both usb ports recognise any usb 3 device but not 2! Thanks!!! Mac Not Recognizing Usb Device Submit Cancel One Moment Please Thanks for your feedback. 8% of people found this helpful.
its weird because when I plug my seagate external hard drive in, the lights of the hd come on but my MBP doesn't recognise it, likewise with my iPod, where the My USB port is now working again!!SOLVED!!!! I did a force shutdown and then when it rebooted, it won;t recognize all usb 2.0….it can't even charge my iPhone when plugged to the right side or even a pen his comment is here This 100% worked.
The ports could be repaired... Check your device’s USB connection Printing troubleshooting Scanning troubleshooting Published Date: Sep 23, 2015 Helpful? Jun 3, 2013 5:56 AM Helpful (0) Reply options Link to this post by tjk, tjk Jun 3, 2013 3:55 PM in response to whitey999 Level 7 (24,679 points) Mac OS Please know that I have experience replacing integrated circuits and troubleshooting circuits elements down to individual parts such transistors, resistors, etc… Thank you, Answer this question I have this problem too
I've had the problem of USB ports stopping working (no USB devices recognized with system_profiler SPUSBDataType ) on a couple MacBook Airs over the last three years. Cancel 2 Answers Filter by: Most Helpful Newest Oldest Most Helpful Answer originalmachead @originalmachead Rep: 104.4k 59 39 313 Posted: 07/31/2014 Options Permalink History There are no software fixes for hardware I ended up calling apple support (surprisingly helpful) and they told me to restart the computer and hold down command+option+P+R keys while it was booting back up.