HelpMinecraft Troubleshooting

Okay, so about a month ago i was even newbier than i was now (if you can belive it) and i had very little experience with making mods. While i was trying to make one i changed ALOT of stuff i didnt need to. I changed some of my .minecraft folder, which was neccessary but i also changed my comptuer path settings. Also i changes Java or installed a different one, something stupid like that.

The mod of cource didnt work but neither did minecraft. The downloadable laucher, minecraft.exe did not work at all(as in wouldnt start up). Even the browser version of minecraft wouldnt work.

Then i reinstalled the up-to0date normal java and deleted everything minecraftish and reinstalled minecraft. Now minecraft works in browser mode but my minecraft.exe still wont work! It seems like mod's and stuff only work on the downloaded minecraft.

the only thing i couldnt restore was the minecraft path file or whatever.

Sorry i have bad hacking or computer vocab becuz i obviously dont know what im doing.

I would be blessed if u could help me 1 of 2 ways.

1) tell me how or if minecraft could work in browser...
2) tell me how to fix my minecraft.exe so i can mod on that.

Thank you for listening to meh and meh noobie storiez!

Shank Youz!

Go to Start>Run
Type in %appdata%
Delete the .minecraft folder.

Uninstall Java, and run CCleaner.
Download the latest version of the JDK (The JRE lacks some things the JDK does, so its recommended to just get the JDK. The JDK comes with JRE as well so dont worry about it not having things from the JRE either.)
(JDK Download)
Install it and make sure it works, you could test it by running your browser version.

It would help if you went online and played the classic version of Minecraft before reinstalling minecraft. Its not necessary though.
Download This.
Run it and hit force update, then Enter Game.
Your game should work now.
You can use this launcher from now on, and just not hit force update to preserver mods and such, or download a launcher from the official website, as that will work.

For future reference, when you install mods, you install them in the minecraft.jar, not the exe.