will not launch, crashes while launching

for every version I try to launch on normal minecraft it will not launch. Forge versions will though. Error Codes.

[13:36:58 INFO]: Client> Error occurred during initialization of VM
[13:36:58 INFO]: Client> Incompatible minimum and maximum heap sizes specified
[13:36:58 ERROR]: Game ended with bad state (exit code 1)
[13:36:58 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[13:36:58 INFO]: Looking for old natives & assets to clean up...
[13:36:58 INFO]: Deleting C:\Users\Owner\AppData\Roaming\.minecraft\versions\1.7.9\1.7.9-natives-97029062593202