Hi, My HTC Desire 816 is about 2 weeks old. I've had problems connecting the device to my personal computer (running Windows 7). I've reinstalled HTC Sync Manager several times, turned on USB Debugging, and even switched cables and ports but to no avail. When I try to update the driver, Windows faces an error saying it's unauthorized to install the driver for the device. However, the device connects perfectly to my office laptop also running Windows 7. I am able to transfer files on that system but not on my personal computer. The HTC website also has been of no help, except for asking to reinstall HTC Sync Manager. Please help. Thank You.