Mynameiscnote

Can anyone help me with this problem: I, for some reason cant run anything on the new tekkit launcher. Tekkit lite to other types of modpacks i cant run. I had tekkit for like 2 years now and this never happen to me. I also even look at my computer's performance and they say that there is nothing wrong. I also just cant run the game for like 1 minute until it closes. Plz Respond to me as Fast as you can.