Smokevs

I've had launchbox on many systems and recently just purchased a new pc and installed launchbox on it and its been working perfect. I was importing my modded files for umvc3 then I went to open it through launchbox my computer restart now every time I go to load launchbox my computer restarts I never had this problem before and I tried to uninstal and re install multiple times nothing works i launch launchbox and the green bar shows up like its opening and then my pc will restart. Ive modded umvc3 on my old pc and launchbox never had a problem with it