I searched all day but haven't find a solution yet.
Today I installed Android Studio without any problems. I added the correct path.
JAVA_HOME to C:\Program Files\Java\jdk1.8.0_20
and
JDK_HOME to C:\Program Files\Java\jdk1.8.0_20
But, when I start the program it freezes on the loading screen. (The gray picture with the green android logo and text Android Studio) It does create a process that I can't close, but after waiting for 20 minutes it's still on that screen.
I tried a clean install, also I tried the 32bit version without any success because it complained about the jvm that I could not fix for some reason. I also did an update for it, but without success.
I have no idea what else I can try to fix this, but I also don't see myself going back to eclipse.
What worked for me was to disconnect my android phone which was connected to the computer(in the debugging mode).