Unknown device in the device error 43 Manager

I get a 43 unknown device error when I start Windows 7.  I tried every fix I found after ten days of research.  When Windows starts, and the notification is popping up that I can't use my keyboard are so difficult to do anything.  Finally, the message disappears (I don't know why) and I am able to type, or if I catch it just just between notifications.  At this time I started my computer in clean boot mode and no error message appears and the unknown device is not USB device controllers manager.

What, in my view, that has happened, is that I used to have an LG phone and the software on the computer.  I now have a new phone, Samsung, that I just connected to the same port on the front of the computer.  The Samsung worked, but did not ask me to install the software, then must have run out of the LG.  I deleted the software from LG and then reconnected the Samsung and got the prompt to download the correct software.  I then plugged a generic USB hub device in order to use the phone and any other device that I could plug in (none at this time and I even unplugged the generic hub).

Now I get the unknown device.  Some fix told me he didn't need a driver, but Windows keeps load a generic driver and so the message repeats the process over and over again.

Unknown error seems to be a common problem, probably a fix is available from Microsoft.

Any help would be appreciated more because it drives me crazy!

Thanks for your reply, Al-Shabaab.  In fact, I solved the problem.

I deleted all the Verizon and Samsung software on my computer.  When doing this, I noticed that my keyboard has gradually deteriorated (failed to start in safe mode F8 key would not work).

I bought a new keyboard... and EUREKA!  Problem disappeared!  Then I rebooted my phone software and have had no problems since.  I guess it was a coincidence that the keyboard was dying as I tried to connect my phone to my computer leading me on a GOOSE Chase that was long, difficult and extremely frustrating!

I appreciate the help and I hope this will help others.

Tags: Windows

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