Fusion is dropping Windows 7 in march. Will likely still work for awhile but it will be considered unsupported.
You may be able to update to a supported version of window 10
" Note: Fusion 360 will continue to work on the operating system after the March update, but will no longer continue to update. Eventually it will stop functioning correctly, as it no longer meets the minimum system requirements to run Fusion 360."
Window 7 may already be on the unsupported list from their last support update.
If that is the case it is time for Langmuir to make and share a compatibility list for computers (cards) the same as they do you the plasma cutters.
edit .
looks like fusion’s end of life support for window 7 was January 14th, 2020 . So it been on borrow time for awhile