OS: windows 7 64 bit RAM: 8GB CPU: intel i5 core 4670k it loads up and does that thing in the messages and errors then after a while it crashes and i dont know why, could someone please tell me?
Likely reasons: Not enough PermGen space. Using Java 8 rev 20. Out of Memory However, we can't tell without the log, so try again, and in the "Messages and Errors" screen, click "Upload Log". Then paste the URL given here.
It says out of memory, try under the options menu in the launcher to increase it to atleast 2 G, more if you are able to.
Install java 64-bit, you probably have the 32 bit version and it won't work with that because of reasons.