Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Lost USB recognition - Help

26 Aug 2012   #1
glennc

Windows 7 Ultimate
 
 
Lost USB recognition - Help

Hello,
I have been using an Sansa MP3 player for quite a while now. Yesterday, don't know exactly what happened, but when I plugged it in I saw an unrecognized device message on the task bar tray. The Sansa software failed to run automatically also. I checked the Remove Hardware icon on the taskbar and it failed to show the Sansa player, it always did before. In Windows Explorer the device is shown. How can I correct this issue? Thanks for any assistance.
Glenn


My System SpecsSystem Spec
.
26 Aug 2012   #2
Skylais

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

1st While the device is plugged in go to device manager find the sansa mp3 within device manager, and then right click it and press uninstall. After that unplug the device from the computer and plug it back in. It should install the drivers. Tell me how this goes.
My System SpecsSystem Spec
26 Aug 2012   #3
glennc

Windows 7 Ultimate
 
 

Hello Skylais,
Thanks for the help! No luck. I took out and reinstalled everything from Sansa. Another weird additional issue, in my user account, the Sansa updater comes up and displays on the desktop when the player is plugged in, it will not do this as the Administrator!!!??? The Device manger shows it, the explorer shows it, but the device eject icon does not show it. Lost in cyberspace....
Glenn
My System SpecsSystem Spec
.

26 Aug 2012   #4
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

glen,
try:

USB DEVICE IS UNKNOWN
Go into Device Manager.
A code of 43 indicates hardware problems.
A code of 28 indicates software problems.

Code of 43 causes:
1. device broken
2. cable broken
3. usb port “broken”
4. device has internal error or hung. Try unplugging, powering off, reconnect, power on
5. insufficient power: usb port supplies 100 mA whereas a hub provides 500 mA

Code of 28 causes:
1.upstream hub has failed or is hung. try power-cycling hub or replacing hub
2.windows unable to locate driver and no device descriptor string present. Contact manufacturer for driver.
My System SpecsSystem Spec
26 Aug 2012   #5
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

Don' think this will solve your problem, but:
Diagnose and fix Windows USB problems automatically
My System SpecsSystem Spec
26 Aug 2012   #6
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

My System SpecsSystem Spec
26 Aug 2012   #7
glennc

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by karlsnooks View Post
glen,
try:

USB DEVICE IS UNKNOWN
Go into Device Manager.
A code of 43 indicates hardware problems.
A code of 28 indicates software problems.

Code of 43 causes:
1. device broken
2. cable broken
3. usb port “broken”
4. device has internal error or hung. Try unplugging, powering off, reconnect, power on
5. insufficient power: usb port supplies 100 mA whereas a hub provides 500 mA

Code of 28 causes:
1.upstream hub has failed or is hung. try power-cycling hub or replacing hub
2.windows unable to locate driver and no device descriptor string present. Contact manufacturer for driver.
Howdy karlsnooks,
The device functions, so there is at least that. The USB tried to fix it and failed..... Oh well! Now I have a ton of USB ports listed in the Device manager. How do I know which one it is, sorry for the lack of knowledge. The couple I stumbled through and one did mention the Sansdisk said it they were functioning properly. I will follow the links and see if I can decipher the information. Thanks kind Sir!
Glenn
My System SpecsSystem Spec
26 Aug 2012   #8
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

I know what I would do first (after learning the hard way), try a known, good cable.
My System SpecsSystem Spec
28 Aug 2012   #9
veeroshj

Windows 7 Ultimate x64
 
 

Hi

I am having a similar if not the same issue.
Is there anyway around the complete shutdown process as this is what works for me atm?
I have to completely shut down my machine, after the device works for 20 odd minutes, for it to work correctly.

The other concern is that both my internal USB hubs are doing the exact same thing... going down at the same time.
One is connected to the front USB ports and the other is a multi card reader. I have checked drivers, cables and the device. Apart from the above could there be something else that could be causing them to perform in this odd manner?

Vees
My System SpecsSystem Spec
28 Aug 2012   #10
veeroshj

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by karlsnooks View Post
I know what I would do first (after learning the hard way), try a known, good cable.
It seems that in my case its the cables... since the card reader is generic with a usb adapter finding a cable to replace will be difficult and the front usb cables come stock with the case so another pain... thanks karlsnooks :thumbup:
My System SpecsSystem Spec
Reply

 Lost USB recognition - Help




Thread Tools





Similar help and support threads
Thread Forum
HDD recognition
So somehow I got in a mess here but I just want to give it a last try before I end it. I have this old laptop which is not mine. A Sony Vaio VGN-FS810. It supports IDE (ATA) drives. It originally came with a 80GB disk which kind of died. So I bought two other discs. A 120 GB Samsung, and a...
Hardware & Devices
Lost my HP Touchsmart LOGO since I lost resetted my BIOS (I guess)
Hi All I have a HP Touchsmart 300-1060a (Home Premium Windows 7 64 BIT) which I bought few years back. Now for the last 6 months or so I started getting issues with my machine was not displaying anything at all after turning it on. So I had to hard reset my power from the machine and then...
Hardware & Devices
Rep Recognition
I am wondering just how a person is alerted to the fact that they have received rep on any particular thread? The reason that I ask is because it seems that when I do rep someone, they are aware of it in very short order, because of their responses in my visitor messages. I have never...
Chillout Room
Ram Recognition
I installed win 7 on my computer with no issues. I built an intel system. My wifes computer is an AMD 6000+ with 4 gig ram. I installed win 7 64 bit just as I did on my intel system only the AMD computer only recognizes 2 gig of ram. I flashed the very latest bios (Gigabyte board) and still only...
Performance & Maintenance
Lost Dual Boot Screen?...Lost Windows 7
I have Vista Home Premium 64 bit and I downloaded 64 Bit RC Windows 7 and did a clean install on another partition of my hard drive. Dual boot was working for about 4 days then all of a sudden it doesnt come up any more. The partition is still there with Windows 7 installed on it but its not...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 16:51.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App