I have an UNO and a laptop with XP. I have always worked on a desktop in another location. Tonight I wanted to install everything on my laptop. When I plugged in the Uno, it did not "fail" to find the driver as stated on the website, it installed completely. However, it was all generic drivers. I don't see "Arduino" in the device manager.
When I let it do the default install, I can load the IDE and turn on the monitor and see the output of the sketch I last uploaded which is always running. But if I try to upload the blink sketch to test the board, it flashes the Rcv light twice, then the software just hangs. If I reset the Uno, then the software comes back.
When I unplug the Uno, I see that the "USB Serial Port (port 14)" goes away. So I thought this is the item I needed to "update driver" for. However, when I try to do that, Windows warns me it may not be the correct driver for my device. I continue anyway and then after a reboot, device manager says "device cannot start". Also "error 10". Since I can connect and see the tx and rx lights blink, and since the monitor function of the IDE shows me the data streaming back continuously from my Uno, I would think I have the right driver. But I can't get it working. Thanks.