New
#11
According to Canon, there is no driver for your camera when using Windows 7 64-bit.
Canon U.S.A. : Consumer & Home Office : EOS 7D
"There is no driver for the OS Version you selected. The driver may be included in your OS or you may not need a driver. Refer to our FAQ section for connectivity issues." - from the link above.
Personally, I always use a card reader to transfer my images. It's quicker and there's no battery wear.