A quick summarization of the suggestions in the thread:
DavidGP:
Which version of Windows 7 are you using? is it 32bit or 64bit as the support paper from Canon only lists 32bit as supported amd/or not supporting the EOS utility and images only viewable via the memory card http://www.usa.canon.com/app/pdf/Windows7_compatibility.pdf
If you just plug in the camera, does Windows load a basic storage driver? with this you can get to download your images from the camera to PC. You could also try with the XP driver to right click the setup and choose Run as Administrator, odd times it dos
allow a driver to install.
Ken Blake, Microsoft MVP:
You never need to connect your camera directly. Buy a card reader for
the type of flash card your camera uses (they are very inexpensive),
put the flash card into it, and plug it into a USB port.
Personally, I prefer doing it this way. It's easier and doesn't use
the camera's battery. I have two such card readers--one that I keep on
my desk, near my desktop computer, and another that I keep in my
laptop case for use when traveling.
klaatu62:
I've had the same problem since I went to Vista, but in checking on the boards, I found an undocumented trick!!!
Turn the camera on, and go to the menu.
On the 4th menu tab select the "Communications" entry and change it from NORMAL to PTP
Plug the camera back into the laptop, wait 30 seconds, and enjoy your camera again
Froboy:
I too had the same problem and was disappointed that Canon did not have an updated driver listed for my Rebel XTi for Windows 7 on their website. I did notice under the software menu that they had updated software for the EOS Utility and Zoombrowser so I went
ahead and downloaded them and that resolved the problem. Full camera function once again while connected to the computer. I was spending a lot of time looking for a driver and apparently it's in the updated software. Hope it works for you as well.
It might be worth your time looking over the thread in case I missed out on any other suggestions or tips that might help resolve your issue.
*If none of the above help, it is probably best for you to create your own thread.*Not only will a new thread give your question more attention to the community, but it will allow you to control which suggestions are marked as answers.
Be sure to include all necessary information that will help with diagnosing your particular issue, including but not limited to:
PC make & model, PC specifications, OS type, a description of what led to the problem you are facing, what steps you have taken in trying to resolve the issue, etc. .
The more specific and detailed you can be, the better it will help with providing you valuable suggestions for troubleshooting your conundrum.
I am going ahead and locking this thread. Thanks to all of those who helped out with their suggestions!