Well, you could eliminate the hiberfil. Search for Command Prompt, right click on it and select "Run as Administrator." I'm assuming you're an admin on this machine. In the Command Prompt window, type "powercfg -h off" (without quotes, of course) and hit enter. That's it; you should gain a bunch of space. You will no longer be able to hibernate your computer, but not many people use this function. If you ever want it back and are willing to let a few gigabytes go, repeat the process with "powercfg -h on".
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