HDMI Converter to USB 3.0 for Monitor stopped working

After upgrading to the Yosemite OS, my second monitor quit working. I use a HDMI converter to USB 3.0 adapter. I tried both USB ports. I have restarted and powered down my Mac Air book. I did have it connected to an external 4 port USB at first but now tried the direct connect to the MAC air. Now I have tried over USB devices like my external Apple Drive. It is not working either. So my guess is something is wrong with my USB ports. I am new to a MAC so I do not know how to check the drivers and see if working. Help please. yes I will google how to's. Many thanks

Hi xlarrybearx,
Welcome to the Apple Support Communities!
I understand that when USB connections do not work as expected it can be very frustrating. In this situation I would recommend reading over and using the troubleshooting steps provided in the attached article.
USB and FireWire Quick Assist
Have a great day,
Joe

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I have an Intel based iMac and have been running my old 17inch apple monitor as a second display for over a year now. For no apparent reason today the monitor stopped working. The screen just appears black. there is power getting to it as the power light is on and the computer detects the display fine. I can even move objets to that monitor, I just cant see anything. Any helps would be appreciated.
thanks
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Yep, have the same problem using a 3rd party cablesson mdp-hdmi adapter. Everything worked fine until quite recently. I have tried pretty much everything to fix it but nothing seems to work. I'm almost convinced it's an OS problem, as everything works fine when I boot into my windows bootcamp partition.
Apple, please get this sorted! I'm reluctant to shell out $35 only to find that I have the exact same problem with the official adapter. Though I probably will anyway because I urgently need to get my display working again.

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Hello @Pandapower,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I have read your post on how your notebook display screen remains blank when you power it on, and I would be happy to assist you in this matter!
To return the functionality back to your computer's display, I recommend following the steps in this document on Computer Starts but Screen Remains Blank (Windows 8).
If the issue persists after completing all of the steps in the resource above, please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

I have pluged a portable battery to the USB and my macbook pro stopped working after that, right before it shut down there was a message on the screen that said something like " USB device is withdrawing so much power, please disconnect and connect again?

I have plugged a portable battery to the USB and my macbook pro stopped working after that, right before it shut down there was a message on the screen that said something like " USB device is withdrawing so much power, please disconnect and connect again?
if the device I connected have caused this, shouldn't the macbook itself have some type of protection that should prevent this from happening.
because when I took it to an apple certified maintenance shop, the guy said that now it could only run while connected to the power. it won't run on batteries. and that I have to change the motherboard.
can I just replace the damaged part only, would apple consider this as a design issue and they could pay for it, or should I just buy a new motherboard for 800$.
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BB1B2,
The problem is in finding a tech shop that will/can do board level repairs on Macs. They are few. And I certainly wouldn't spend $800 on a new logic board - I would replace the computer if I had to pay that much!
You could call around to a few repair shops and see if they feel competent to isolate the problem and do a board level repair - but I'm afraid, in the end, that your search will be futile.
Sorry,
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I have hp laptop dv9009us one day all the USB ports and webcam camera stopped working

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usbccgp            Microsoft USB Generic Parent Driver   c:\windows\system32\drivers\usbccgp.sys         Kernel Driver   No            Manual Stopped           OK      Normal No       No
usbcir   eHome Infrared Receiver (USBCIR)    c:\windows\system32\drivers\usbcir.sys Kernel Driver   No       Manual            Stopped           OK      Normal No       No
usbehci Microsoft USB 2.0 Enhanced Host Controller Miniport Driver c:\windows\system32\drivers\usbehci.sys            Kernel Driver   No       Manual Stopped           OK      Normal No       No
usbfilter            AMD USB Filter Driver           c:\windows\system32\drivers\usbfilter.sys          Kernel Driver   No            Manual Stopped           OK      Normal No       No
usbfltr   Razer Copperhead Driver         c:\windows\system32\drivers\copperhd.sys       Kernel Driver   No       Manual            Stopped           OK      Ignore No       No
usbhub Microsoft USB Standard Hub Driver    c:\windows\system32\drivers\usbhub.sys           Kernel Driver   No            Manual Stopped           OK      Normal No       No
usbohci Microsoft USB Open Host Controller Miniport Driver c:\windows\system32\drivers\usbohci.sys          Kernel Driver   No       Manual Stopped           OK      Normal No       No
usbprint            Microsoft USB PRINTER Class           c:\windows\system32\drivers\usbprint.sys          Kernel Driver   No            Manual Stopped           OK      Normal No       No
usbstor USB Mass Storage Driver        c:\windows\system32\drivers\usbstor.sys           Kernel Driver   No       Manual            Stopped           OK      Normal No       No
usbuhci Microsoft USB Universal Host Controller Miniport Driver         c:\windows\system32\drivers\usbuhci.sys            Kernel Driver   No       Manual Stopped           OK      Normal No       No
uwbusb            UWB Bus Control USB-Miniport Driver          c:\windows\system32\drivers\usbuwbmini.sys    Kernel Driver   No       Manual Stopped           OK      Normal No       No

Did you ever get this resolved? I am having the same problem and have tried just about everything for my dv9000.

Mountain Lion 1.8.2 update made my dual monitor stop working on Mac Pro mid 2012

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Ok,
did some extra test here, but first of all my configuration:
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To all users with the same Mac Pro configuration: hold to update to Mountain Lion 1.8.2 until Apple fix this driver issue.
More info are on the Console output, so will have to contact Apple on-line support to signal this bug.

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I've made sure all the cables are plugged in properly (power & connection to the Mini), but all I'm getting is a flashing orange light on the monitor.
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Each of the external drives has its own power supply; I generally only use one drive at any one time, but on rare occasions I have powered up more than one to confirm or transfer files. I don't leave any of those drives on when not in use, and when everything is working I properly eject/unmount them before turning them off.
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Message was edited by: blick
Message was edited by: blick
Message was edited by: blick

Reference Monitor Stopped Working

While working on a project I had to use "Interpret footage" to change the frame rate and pixel aspect ratio on a clip. After making the change, my reference monitor stopped working correctly.
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Hey,
I had this exact same problem!
I know this is an old thread, but just incase someone comes along here looking for a working solution,
Liquid80 from http://forums.adobe.com/thread/688529
posted this answer,
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All the best

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Hi,
I have a camera from MediaTech company, it is written on it MT400 and serial number 2604050599. Before latest update it works, after install newest version of Flash Player it stop working. I tested it on http://testmycam.com as one of Adobe employee advices on forum but I have only black rectangle. On top left corner of this rectangle it is written Camera: USB PC Camera (SN9C 102) , FPS 10. I disabled Hardware acceleration but problem remains.
As I remember this camera is USB 1.1. Does new Flash Version support USB 1.1?
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Regards

I pressed Allow, before pressing Allow background was grey, after Allow
it gets black. I see the name of this camera on list. I also try another
camera from Logitech (I can't remember what name was it, but one of the
newest) and everything works which suggest it is strictly related with
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Regards
W dniu 2012-03-31 08:39, Nodster pisze:
>
Re: After update to 11.2.202.228 mz USB 1.1 web cam stop working
created by Nodster <http://forums.adobe.com/people/Nodster> in /Using
Flash Player/ - View the full discussion
<http://forums.adobe.com/message/4304094#4304094

HP Pavilion 15 Notebook PC hdmi port to hp monitor stopped working

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Hi there @Aliikoma
Welcome to the HP Support Forums! It is a great place to find the help you need, both from other users, HP experts and other support personnel.
I understand that you are having trouble with your connection to an external display. I am happy to help. Please post the full product number for your notebook. See the following, if you need help with that information.
How Do I Find My Model Number or Product Number?
You can try looking through these two pages and see if any of the suggestions make a difference for you.
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Connecting a Monitor, Projector or TV (Windows 8)
Let me know, whether you are getting any specific errors, or when using the methods in those pages if the HDMI shows up at all.
Malygris1
I work on behalf of HP
Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution.
Click Kudos Thumbs Up on the right to say “Thanks” for helping!

HDMI Converter to USB 3.0 for Monitor stopped working

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