macbook pro usb ports not working
This just started about a month ago. When it first occured, I could restart the laptop and the ports would work. Now, no luck. Mac OS X - 10.6.8
Apple Event: May 7th at 7 am PT
This just started about a month ago. When it first occured, I could restart the laptop and the ports would work. Now, no luck. Mac OS X - 10.6.8
Solution found!!
Had the same persisting problem on a Mac Pro 3.1, which literally happened all of a sudden after a clean OS X install,
Had two OS Xs on two separate drives, reinstalled one but problem persisted.
I had tried:
Resetting PRAM.
Reset SMC.
Shut down/unplug-plug everything/restart.
Reinstall OS.
Update drivers/OS.
Extension USB cord.
Plugging USB hub/power device to force more power from the USB.
Reading countless articles on the topic.
None of those worked. Unlucky me.
Finally read that as a last resort to try & remove the CMOS battery (the battery on the mobo) & either reinsert the same or a new one (CR2032).
Unlucky me, the battery clip broke off & that was the last straw lol ..so I thought... F-it, I'm just gonna power it on as it is & see what happens!
Voila!! USB function restored with no battery at all, and so far...it's working just the same with no abnormal reaction to the lack of battery.
Tbh...I rather get errors & load drivers if need be, than not have a keyboard/mouse and be unable to control the Mac at all.
Try removing the battery & reinserting it, or just removing it all together & hopefully that fixes it for you all, just be careful as the top clip can easily break, and the solution to fix that is soldering...which I rather not attempt if it can be avoided.
Good luck!!
Solution found!!
Had the same persisting problem on a Mac Pro 3.1, which literally happened all of a sudden after a clean OS X install,
Had two OS Xs on two separate drives, reinstalled one but problem persisted.
I had tried:
Resetting PRAM.
Reset SMC.
Shut down/unplug-plug everything/restart.
Reinstall OS.
Update drivers/OS.
Extension USB cord.
Plugging USB hub/power device to force more power from the USB.
Reading countless articles on the topic.
None of those worked. Unlucky me.
Finally read that as a last resort to try & remove the CMOS battery (the battery on the mobo) & either reinsert the same or a new one (CR2032).
Unlucky me, the battery clip broke off & that was the last straw lol ..so I thought... F-it, I'm just gonna power it on as it is & see what happens!
Voila!! USB function restored with no battery at all, and so far...it's working just the same with no abnormal reaction to the lack of battery.
Tbh...I rather get errors & load drivers if need be, than not have a keyboard/mouse and be unable to control the Mac at all.
Try removing the battery & reinserting it, or just removing it all together & hopefully that fixes it for you all, just be careful as the top clip can easily break, and the solution to fix that is soldering...which I rather not attempt if it can be avoided.
Good luck!!
I have been struggling with this problem for weeks! After resetting the PRAM and SMC, etc. I finally went to Apple to get the latest MAC OS update - installed it and restarted and voila!!! My USB port is now working again!!
SOLVED!!!!
I've been having the same issue. It comes and goes so it's hard to isolate. I have the latest system software and it still hasn't resolved the issue. It's the 'rear' USB port.
This solved the problem for me. One of my USB ports stopped working after I upgraded to Mac OS X 10.8 Mountain Lion (USB device was not detected when plugging it into this port). I resetted the SMC: solved!
Hi V,
Glad that worked for you. 😉
SOLVED!
After the first two weeks, my USB Ports stopped working.
Just a while ago I've tried PRAM Reset, and it all worked out.
Restart >
Command + Option + P + R
holding the keys when the Apple sign doesnt appear yet on the screen,
it restarts and USB ports start working. 🙂
I've done everything, latest updates (both Lion and Mountain Lion), SMC, and PRAM. I have MBPR and both are working very well with everything. But the left one keeps reconnecting my iPhone 4S (iOS 6 Beta3) every 20 seconds. It doesn't do it with other iPhone 4 or iPod touch.
It's strange and don't know what to do.
I lost the use of one of my USB ports after I tried to use an external 3D Sound Card.
The reset worked :Command + Option + P + R
Thanks I was glad it was not a dry joint on the port. : 😀
Got the same problem on my MacBookPro8,1.
The PRAM reset (Restart -> cmd + option + p + r) worked for me 🙂
i have to ask smth. if i make this resseting SMC or whatever it said... will i loose any files... pictures music... applications?
surtalev, greetings; No.
Ciao.
This worked perfectly for me thanks!
my usb ports stopped working after i upgraded to the mountain lion.
whitey999 wrote:
This worked perfectly for me thanks!
my usb ports stopped working after i upgraded to the mountain lion.
Glad that worked for you, and you're welcome. 😉
macbook pro usb ports not working