in more detail, Technic was working fine, something bugged in my computer where twitch completely crashed and died randomly and forced me out of MC, going black screen. once it stopped (happened for not more then 30 seconds) it resumed to the launcher which would (like other crashes) start, exit the launcher and not manage to open the actual game, then the launcher re-appears. trying again gives the same result. I've lowered my allowed ram which has fixed the problem before. I've completely deleted all Technic stuff and reinstalled still the same results.
here are the logs: https://pastebin.com/xDMxrtYX
(past when i downloaded the modpack i use)
EDIT: deleted and reinstalled java 8, but to no avail