windows 10 libre office 5.3.7.2 wont start, help

upgraded to 5.3.7.2 on 02/03/2018 now I can’t open libre office at all

I have windows 10 also. Dell 6420. I installed 5.3.4.2, It installed ok and was not on my desktop but was in my “all apps”, which shows up in window’s icon, at bottom left then “all apps” is little 3 lines near top left. Look there before you reinstall, if you havn’t already.