With all due respect, ask if you could give anything but generic advice given what facts you supplied in your post?

Generic advice.

1. Many USB things fail and my first response is to install the motherboard driver package and check the BIOS settings. http://www.usbman.com reiterates this.

2. Some camera software offers an uninstall. But before you exclaim that you may lose your pictures, remember that a hard disk is temporary storage. We only lose what we don't backup.

3. You may need to call the camera support line on how to really remove it so you can get a proper and new install.