Solution to the problem: "x GB installed (n GB usable)
http://www.igorware.com/64bit-checker
Note: I AM NOT RESPONSIBLE (and I think that's obvious) FOR ANY DAMAGE CAUSED TO YOUR COMPUTER BY NOT FOLLOWING THE STEPS CORRECTLY OR IGNORING THE WARNING.
Remember that your computer must be 64-bit to use this method; otherwise, you could cause errors on your PC.
Welcome to the channel! Any questions or suggestions are welcome in the comments!
Need help? Ask me!!