Uninstall Precision XOC and restart your PC..Then delete the Precision XOC folder located in the Program Files (x86)\EVGA folder..Then install Precision XOC again..Then open Precision's settings (gear button, bottom-right) and enable 'Start With OS' and click OK..Then close the settings and close Precision..Then restart your PC and see if it runs at startup.
 
Sometimes it's slow to start up, can take a minute.
 
If there's something in the "Stopped working" message that tells you why it stopped working, say what it is.

Try doing what I suggested above anyway, if you haven't already.

Moving thread to evga software subsection.

RazoR84
It's working! Thank you very much!

 
Cool 
 
Hopefully it stays that way..A newer version of Precision XOC is in the works..Make sure 'Check Updates' is enabled (which it is by default) in the Settings -> General tab to notify you..Or you can subscribe to the EVGA Software forum where it will be announced.

No idea where to put this but..
Win 10 64bit
Precision not starting at windows startup
Settings: Open OCX, settings, General, start minimized, start with OS,  boxes checked, click ok, close and save profile
Minimize and OCX shows in taskbar show hidden icons
In start menu go to EVGA folder, open and right click EVGA Precision OCX, Choose pin to Start
Restart PC and OCX should start up with OS. Check hidden icons..
Hope this helps like it did for me.