wont stop crashing after i permenitly delete it and redownload it.

Put the summary of the bug you're having here
i dont know how the problem started its never happened before. when i loaded it, it showed the mojanj in orange and complete white background and then it went black for a few seconds and crash report it said that the jar files where untouched. so i deleted it cleared my recyclebin and re downloaded it from minecraft.net and i loaded it and it crashed i got this method from the suport center but it doesnt work.
*What I expected to happen was...:*to load with no problems.
Describe what you thought should happen here it should have no problems

*What actually happened was...:*it crashed and i tryed almost every method on the suport center and none worked.
Describe what happened here

Steps to Reproduce:
1.download the launcher
2. ...login and load the launcher
3. ...bam, crash report