USB can't see

Sak Exett · 03-03-2005, 11:39 PM

At system devices I see USB controllers and under that Intel host controller, USB card reader, and USB root hub. All say they are working properly, yet card reader, camera, jump drive,etc cannot be found at My Computer, Windows Explorer, or any "browse" list of programs such as acdsee. The problem may have been started by a cheap scanner without a power supply that gets it's power from USB, but it never gave an indication of causing a problem and is now disconnected anyway.--Help?--
Thanks
Sak

**johnwill** · 03-04-2005, 11:09 AM

If you have blown the MB fuse for the USB ports, that would be the indication you'd get. The controller looks normal, but devices don't work.

Have you tried uninstalling all of the USB components and rebooting and letting Windows discover them again?

Sak Exett · 03-04-2005, 02:51 PM

Thanks, when I shut it down I will check for a fuse. I guess it will be easy to find.

**johnwill** · 03-04-2005, 06:49 PM

Sorry to say that it's not going to be quite that easy. The fuses are tiny surface mount devices, and require soldering and the correct tools to replace. I've replaced several, and I keep old MB's around to steal parts like this off, but it's not easy without the tools and experience.

Sak Exett · 03-04-2005, 10:57 PM

After a lot of work I got to where the fuse should be. (shure was dirty in there - vacuumed it -.) I'm not sure I even recognized the fuse and it shure looks hard to solder in there. I put it back together for now until I'm sure that's it and I can find the fuse. But .... It's still doing the same thing, but USB printer is working and powered 4 port USB hub won't work. That hub acted kinda funny anyway. Like it was bucking the machine voltage instead of adding to it. When I plugged it in the computer would sometimes throw up.
I sure appreciate your help.
Sak

**johnwill** · 03-05-2005, 10:44 AM

Hard to say what's going on in there, but I'd certainly try to use the USB without a hub, since they're frequently a source if issues.

03-03-2005, 11:39 PM	#1 (permalink)
Sak Exett Registered User Join Date: Feb 2005 Location: Galveston, Texas Posts: 10 OS: 98	USB can't see At system devices I see USB controllers and under that Intel host controller, USB card reader, and USB root hub. All say they are working properly, yet card reader, camera, jump drive,etc cannot be found at My Computer, Windows Explorer, or any "browse" list of programs such as acdsee. The problem may have been started by a cheap scanner without a power supply that gets it's power from USB, but it never gave an indication of causing a problem and is now disconnected anyway.--Help?-- Thanks Sak

03-04-2005, 11:09 AM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,654 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	If you have blown the MB fuse for the USB ports, that would be the indication you'd get. The controller looks normal, but devices don't work. Have you tried uninstalling all of the USB components and rebooting and letting Windows discover them again? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

03-04-2005, 02:51 PM	#3 (permalink)
Sak Exett Registered User Join Date: Feb 2005 Location: Galveston, Texas Posts: 10 OS: 98	USB can't see Thanks, when I shut it down I will check for a fuse. I guess it will be easy to find.

03-04-2005, 06:49 PM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,654 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Sorry to say that it's not going to be quite that easy. The fuses are tiny surface mount devices, and require soldering and the correct tools to replace. I've replaced several, and I keep old MB's around to steal parts like this off, but it's not easy without the tools and experience. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

03-04-2005, 10:57 PM	#5 (permalink)
Sak Exett Registered User Join Date: Feb 2005 Location: Galveston, Texas Posts: 10 OS: 98	USB fuse After a lot of work I got to where the fuse should be. (shure was dirty in there - vacuumed it -.) I'm not sure I even recognized the fuse and it shure looks hard to solder in there. I put it back together for now until I'm sure that's it and I can find the fuse. But .... It's still doing the same thing, but USB printer is working and powered 4 port USB hub won't work. That hub acted kinda funny anyway. Like it was bucking the machine voltage instead of adding to it. When I plugged it in the computer would sometimes throw up. I sure appreciate your help. Sak

03-05-2005, 10:44 AM	#6 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,654 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Hard to say what's going on in there, but I'd certainly try to use the USB without a hub, since they're frequently a source if issues. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience