I am planning on purchasing a computer, namely an HP Compaq 6005 Small Form Factor with a 64-bit AMD processor.

While the documentation I have accessed suggested that there was a Trusted Platform Module on the motherboard in the form of an "Embedded Security Device," there was no suggestion that the said computer had UEFI.

While reading the documentation, I have studied the BIOS layout, the necessity to setup a mistake-proof Password (i.e. Setup Password) before changing anything, the importance of copying default settings to a USB before tampering with anything, and the complexities of enabling/disabling the Security Features, at which I am planning to talk about in the next paragraph.

Now, for starters, I am willing to learn how to disable TPM, but I am worried, because it will void the warranty. For now, to not try to break what doesn't need fixing, I am planning to try installing Linux Mint without tampering with the BIOS settings. Like I said, if TPM intends to secure my private information, and does not need to be off in order to enjoy Mint's freedom, why disable it?

While reading the security options in the computer's BIOS, the following are what is listed:

When I saw this list, I almost fainted! This is why I am reluctant to disable something that might hold the computer together. This computer comes pre-loaded with Windows 10 Home, but without the DVD copy, so I am on my own over there. I am intending to wipe out the Windows 10 Home partition using GParted and install a 64-bit version of Linux Mint 19.1 all by itself.

Right now, I am planning to hold off trying to disable TPM because I don't think it should be touched at the moment. I guess I should say I'm adamant on it. However, if you have other recommendations, I would love to listen to it, if it works.

Thank you for reading, and bye now!

If you're adamant, why bother asking ?. FWIW I never turn anything off anymore.
The kernel has supported TPM 2 for a few releases now - TPM 1.2 by some userspace tools for longer. You're never likely to use it overtly.

As for scrubbing Win10, I've never had Win10 Home, but the Pro version has a system image under Control panel - I always take that onto a USB and toss it in a drawer. I have had to restore from one, and it works fine.
I like to leave it on the machine just in case - shrink it down and ignore it. You can always delete it later and incorporate the space into Linux. Each to their own.

BTW, these days you will have UEFI - especially with Win10.

Sorry.

Isn't that a little passive-aggressive?

I would be very curious to know HOW you disabled TPM (which I assume is AMD's "Intel Management Engine")?

When PC makers were last doing so, it was only restore media, not what you probably want when multibooting with Linux. Get the Win10 .iso directly from M$ if you want to have things your way. It's how I did my only post-XP installations.

I didn't; the computer is not ready yet. I just read online manuals and articles.

I asked early because I don't want last minute f***-ups.