About 2/3 of the time when I go to upload my program after connecting my Arduino Uno, I get a COM Port not found error. I end up unplugging and replugging the USB cable several times before it finally takes. This is a brand new computer, and I have tried several different USB ports on the computer all with the same results. I have two Uno's and they both do the same thing, so I don't think it is anything wrong with the Uno, but I don't really know what else to look for. I have also checked to make sure I have the latest drivers installed (by going to the device manager, right clicking on the Uno, and selecting update driver).
Anyone else having issues like this? Is the a solution/work around?