We are here to help. Firstly, 3 - 4 years old
That is a lot of Windows and other software updates. Windows also likes to leave old crap lying around. Anyway, for the record, installing a new SSD is very simple. You take out the old HDD and replace it with the new SSD. You can easily make do with a 64GB SSD. I have even used 32GB ones with no problems. Obviously, the key is to then make sure you have your data (movies, photos, documents, bookmarks etc) on a separate disk.
They are also very cheap. the beauty of replacing the disk with an SSD is that it is non-destructive, i.e. your old HDD is still intact.
That said, you have 2 options that I am prepared to offer:
- Install Windows 10 on a new SSD.
- Install Windows 10 on your existing HDD (assuming it is a HDD).
I, personally, would recommend option 1 as it is non-destructive. You may require a cable. Also, this allows you to connect the existing HDD via a caddy in case you have data on it. Your PC may also have spare bays anyway, allowing you to add the SSD, but, you unless you switch the cables around, you will need yo amend the BIOS to change the boot disk priority. These things may sound complicated, but, they are not.
I have done this so many times that I do tend to forget some steps. However, as far as I can remember, Microsoft have changed the way they validate the software on licensed PC's. It used to be the case that when you changed various parts of hardware (HDD, LAN card, graphics card etc.), this would invalidate the licence. However, apparently, their servers are more 'aware' now, so, assuming your previous licence was valid, you can just reinstall Windows 10 again and it will become validated. The software is easily downloaded from, guess where, Microsoft's very own website. Try
here. There is nothing illegal about downloading Windows 10, just using it without a valid licence is dodgy!
So, my suggestion is that, assuming that your current PC has a valid Windows 10 licence, you will have no problems.
Before you do this, you should make a note of any software you may need to reinstall, and backup any data if you are overwriting the existing disk.
Going forward, you should consider using Windows Defender initially, and cancel payment of the paid for one. I have never had a virus with it yet.
Also, consider taking some system images shortly after the initial installation and the subsequent Windows updates, labelled accordingly.