When I plug my Samsung Galaxy 6S into my computer, it installs drivers. After that, just about every time I try to shut the computer down, it hangs...for 10 or 15 minutes. Then, it reboots. The only way I can get it to shut down is to do a hard stop with the power button. Happens regardless of how I set the Galaxy connection (e.g. files transfer, charge only, ...)

Ironically, this started a few months ago when I attached a kindle fire to the computer to transfer files.

When I go into device manager and uninstall the kindle drivers, there is no change.

However, when I uninstall the Samsung drivers, the computer boots normally, even with Kindle drivers installed.

When installing/uninstalling Samsung and Kindle drivers, there are some cases where I try to restart from the start menu, and it will shut down, but hang on reboot (comes up with bios screen, but the Win10 "circle" doesn't come up, and it just hangs indefinitely).

Any ideas would be appreciated, thanks.

FYI, System restore was "off" during the initial problem timeframe