Disclaimer: While this question is about my smartphone and hence may be considered off-topic, I'm hoping the more general issue (which could apply to other USB devices) can be answered in this forum.
My work PC was recently upgraded to Windows 7 64-bit edition.
I have a Palm Treo 680 smartphone and on the previous operating system (Windows XP) it would always trickle charge via USB when I had it plugged in.
However, there is no updated Palm Treo USB driver for Windows 7 64-bit edition, which means I cannot synchronise it via USB (I have to used Bluetooth instead).
One thing I have noticed is that when I plug it in via USB to my Windows 7 computer, it won't even charge. I'm wondering why a valid USB driver would be required for this; shouldn't the charging be occurring at the physical layer of USB, where a driver wouldn't be necessary?
I have a Windows XP virtual machine installed, and when I explicitly "attach" the phone to the virtual machine via the
USB menu, it commences charging.