So I'm not really sure what even happened all I know is that I tired to run Tekxit 3 LE Official. When it didn't run a tested multiple other packs including Attack of the B-Team, Blightfall, Tekkit, ect. None have been able to even open. The launcher flickers then almost resets like it never was launching in the first place. I tried reinstalling the pack and launcher, even a complete check on my PC. Specs have nothing to do with it I have 12gb of RAM also nothing should be conflicting with the program. I'm honestly at a loss for words as this is nothing like I've ever seen. I've tried just about everything reinstalling Java was something I tested but to no avail. I tried researching my problems hoping someone had the same issues but I only find outdated sources and after updates I dont trust their solutions. It may also be well to inform everyone that the modpack did initially work but i tired downloading another modpack which was RLCraft but that didnt open and now im here(I now only have Tekxit installed and still wont run).
Edit: Almost forgot crashes when "installing minecraft assets"