cant go on 1.7.9 (crashing)

Incomplete without a crash report from ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]). Please attach it so that we can diagnose your issue.

Most likely a duplicate of MC-38527

Besides that: Your version of Minecraft is no longer supported. We are currently only accepting bugs found in the official release 1.8 and later.