New Uno in mail, unrecognized device.

[poxin]

Hello. I'm having issues with the arduino uno that I purchased from adafruit.

I've used plenty of these in the past and this is the first time I've ever
had an issue. I've tried multiple pc's, usb ports, etc, but no computer will
recognize the arduino anymore. It worked the first day I got it for about 30
minutes to test a sketch and make sure it worked. I went to program on it
today and the computer comes up with 'Unknown Device' no matter what I do.
The previous code uploaded to it still functions when I plug it in, but I
can't change it at all now!

[adafruit_support_bill]

the computer comes up with 'Unknown Device'.

So it recognizes that something has been plugged in?

Have you tried using Device Manager on the "Unknown Device" to re-install the Uno driver from the IDE "Drivers" folder?

[poxin]

I have done that, it doesn't fix the issue unfortunately. Tried uninstalling it, re installing it, manually loading the driver to it. Nada.

[poxin]

I looked at the log file in the windows INF folder, not sure what snippet to paste but there is a lot of UNKOWNDEVICE in there.. Frustrated because I needed this by tomorrow and now the board doesn't even work at all

[adafruit]

What computer/OS are you using?

[poxin]

I've tried winxp, windows 7 x86 and x64. Nothing works unfortunately.

[poxin]

Windows has stopped this device because it has reported problems. (Code 43)

Port_#0001.Hub_#0005

Etc.

[adafruit]

did you try another USB cable?

[poxin]

Yes, I just did. Good idea. Same thing unfortunately. Tried everything I know of.

[Scout]

I have just purchased my first Arduino UNO rev.3 and am having the same problems with unrecognized device. Mine though, will load and program properly on two other computers that are not mine. I have two computers at home, neither will recognize the Arduino. I can load the Arduino software package ok and verified the driver is there. I have used Windows XP and 7, tried several usb cables,usb and wall power.
It seems the computer can't link the device driver to the unrecognized usb device if the UNO dosen't send it's name to the device driver. I'm lost at this point and would appreciate any ideas.

[adafruit_support_bill]

Can you "uninstall" the unrecognized device in device manager and try again?

[Scout]

Did the uninstall, then replugged the UNO back in. Same results. I can point the device driver right to the driver location and it still can't recognize it. If I get a second Arduino board, maybe from another vendor, I might have better luck. Maybe need to find a Duemilanove that uses the FTDI chip instead of the ATMega16u2 that the Uno Rev3 uses. What do you think?

[adafruit_support_bill]

I can point the device driver right to the driver location

What driver location are you pointing to? It should be the "drivers" folder in you rArduino install - not the "FTDI USB Drivers" folder inside it.

[Scout]

Glad you asked that! I went back and double checked the path I was using and discovered that it actually pointed to the FTDI drivers. So I wrote down the correct path and typed it into the device driver manager and it found it, installed it and now under Ports(com&LPT), is listed : Arduino UNO rev3 (com3). Thankyou so much for the help, I'm a happy camper till the next future hurdle!