Minecraft Forums

So, about a week ago I tried getting on minecraft, it was working perfectly until then, and when I logged into any server, there came a java error, and every server I tried, a new java error came up, one different from the others, a different one each time the server crashed. So I thought it might be a problem with the mods I downloaded, so I deleted the MC folder and the Launcher. After that, I re downloaded the Launcher, and when I logged in and pressed Play, the game started to download. After it was done, the game opened but crashed immediately. I tried again, and found that only half of the files that I needed to start the game were there. I tried downloading again but the same thing happened. How do I fix this? My friend has a birthday party tomorrow and I kinda need this set up for then.