I purchased software for a cutting machine which came with a bucketload of fonts. The plan was to use one font at a time as needed. Somehow I managed to not only unzip the file but install all of them as well. I deleted all the font files but I went into the control panel/fonts and they're still installed. There are more than 6K fonts installed. I was trying to randomly delete what I thought were the file fonts. I tried to delete one but it said it was a system font and that deleting it might cause issues. I considered selecting all and then delete hoping that I might get the same message for the system fonts so I could skip those but delete the rest. I don't want to take any chances of screwing up more. Input is greatly appreciated.

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