Tarek325

Ok, this is good but annoying. I turned on my laptop and it began installing usb drivers for the built in web cam at the top of my laptop screen. The drivers should have already been there because i erased them previously and then windows vista64 automatically installed them. Since my laptop seemed to be rreinstalling USB drivers on its own, I tried plugging my Forerunner 305,my logitek wireless mouse, my Sony mp3 player, and my ScanDisk Cruzer-all are recognized. In short, my computer fixed itself after having this problem for about 8 days. What does this mean? @#$@% if I know. My current guess is that there was (and still is) a loose connection in my computer that is causing USB errors. The only way it would install a driver when i booted up is if it suddenly recognized hardware that was invisible before hand. My webcam is built in-there's no way for me to physically remove it. Maybe something wasnt connected between my motherboard and the webcam (which is a USB device even though it doenst plug into a USB port)and it caused other USB detection failures. To everyone else who has this problems-do you have any USB devices built into your computers thatare not attached through a physical cable? If so, you might want to try disabling, running diagnotics on, or talking to your computer help people about internal usb devices that could be malfunctioning. I'm still interested to know what this problem actually is, (especially because it could just as quickly go wrong again)so i will keep reading posts here Tarek

when i removed all the usb stuff from the device manager and windows reinstalled the drivers, I got the same message before i even attached anything to my laptop! upon closer inspection I realized that the built in webcam is a usb device but I dont think that is the problem. When i double click on the conflict, I get the "USB device not recognized" window listing: USB Root Hub (2 ports) Unused Port Unknown USB Device ...but there is nothing plugged into my 2nd USB port! This makes me think its a hardware problem and something got fried inside my laptop when i plug in a flash drive and my wireless mouse receiver, the listing above changes to : USB Root Hub (2 ports) Unknown Device Unknown Device sometimes one of the 'unknown device' is in bold, sometimes the other any new thoughts on the problem? Tarek flat_soda@hotmail.com

Wow, this post started in Dec 2006 and now (Feb 2009) people (including me still have this problem! I am using an HP pavillion DV4 laptop running windows Vista64. All of a sudden I was having the same USB problems everyone else here had. I cant say exactly which of these USB devices stopped working first: Logitek wireless Laser mouse nano SONY MP3 walkman Garmin Forerunner 305 GPS After these stopped working (they still get power from the USB ports but cant transfer information) my Scan Disk micro cruzer flash drive had the same problem. I have tested my mouse and my flash drive on another computer and they work fine-i suspect the same will be true of all these usb devices. I then tried a very old wired mouse and had no problems using it. So far, I understand from my tests and from these posts: its not vista, logitek, or hp specific (but logiktek usb devices may be more likely to lead to this problem?) it seems to affect usb 2.0 not usb1 the usb2.0 devices show up as unknown devices in device manager but i dont get the yellow symbol with an exclamation point There are several fixes posted and I haven't tried most of them. I'm going to try deleting the usb devices from the device manager and let windows reinstall them and if that doesnt work i'll try a system restore to last week (its been a problem for a few days only). Did anyone else try a system restore? I didnt see that mentioned in any post (although i did see that reinstalling operating systems didn't help!) Tarek flat_soda@hotmail.com [please email if you develop a clear understanding of what causes the peroblem. The 2-3 magic bullets posted so far seem to work temporarily or only on some systems]