My USB Flash Drive works 99 out of 100 times when it is plugged in. The 1% of the time, a bubble comes up "USB Device Not Recognized". When I look in the Device Manager, the device shows the Vendor ID and Product ID are all zeroes. (See attached Screen Shots .BMP) I know that re-plugging it solves the problem, but I am looking for any assistance on where I can look to completely eliminate that 1% of the cases where it is not recognized. I have a number of identical fobs and a number of very similar PCs - I have not been able to determine that the problem is particular to specific device(s) or specific PC(s). I have spent a lot of time re-plugging prior to seeing it again, so it is not a question of the port "going to sleep" or it not having enough drive current (it is the only device outside of USB keyboard/mouse.) There is no read/write activity during plug/unplug, I am just attempting to get them to enumerate correctly 100% of the time. During "re-cycling" it is not plugged in again until the "ding" happens indicating it was successfully removed. The PCs are HP tower models that are less than 1 year old, so the BIOS, OS and hardware (including USB connector) are as up to date as reasonably could be expected.