1) How do you make ubuntu read an exfat file system? It will recognize the usb, but says exfat is unsupported.

2) When I am in my bios my temps slowly and steadily rise for no apparent reason. But if I am just using the computer, and I reset and then go back to the bios, my temps are much lower. And that wouldn't give enough time to cool down THAT much. How do I read my temps while not in the bios?

2) you might be surprised how fast the CPU will cool off once a load is removed. It's not a huge component and it has an engineered cooling solution sitting right atop it.

I ran a search for "pc temperature monitor linux" and found a whole mess of links with - hopefully - some info that can help. I'll let you wade through those since I'm clueless about Linux.

Try installing the exfat-fuse package.

(The command to do this is "sudo apt-get install exfat-fuse")

Does that require net service?

You will need Internet access to run the command (as well as the "sudo apt-get update" command that you should enter first), or to use whatever GUI program you use to install the program, but once it's installed, you won't need any further Internet access to access exFAT filesystems.

If getting Internet access on that computer, even temporarily, is an issue, there are options, like apt-offline, to work around this issue. Alternatively, you could just install the .deb files manually (though you will need to resolve the dependencies yourself).

As you can see, it is *much* simpler if you can get Internet access on the computer, at least long enough to install the packages you need.

(Also, like with every modern OS, you will need Internet in order to install software updates; the same program that installs them can be used to add packages like exfat-fuse.)