I said here a few months ago that my computer with SSD disk died.

I thought that it was probably the SSD disk.

I took that computer -- with Windows 7 -- to the my friend's shop, and it turned out that it started. However, there were problems, and he installed a new HD (which was not SSD).

Then it turned out that it did not work anyway -- that it was a problem with the motherboard. I was not completely dead, but almost.

So he gave me a new (little used) computer at the same price, but now this computer -- that I am using now -- has Windows 10 installed.

I know almost nothing about 10; I have only tried it on my sister's computer.

Do you know what security measures I should use with Win 10? What settings should be used, what other things should be taken into account?

Thanks.