Rosie, not aimed at you at all, but to everybody, and thanks for reminding me. From an old keyboard warrior, who remembers when keys were round and slid from side to side in a wooden frame. Backup.
Get a portable hard disk, USB connection, at least as big in capacity as your computer drive, preferably double that or even more. They are cheap nowadays.
Plug it into your computer. If the disk comes with its own backup software, ignore it, it is often a cut down version of something free, and it will eventually bite you somewhere as it fails to keep up with updates. Format it if necessary.
Let Windows use it as a backup for its own backup scheme, which tends to function across versions and updates.
The first time will take a while. You only really need to include your 'my documents' folder, anything else can be reinstalled if necessary.
Subsequent backups will be quicker, they will only record changes.
When the backup is done, unplug the disk and put it somewhere safe. This means that there is the shortest possible time that a PC crash can harm the disk. Don't be tempted to use it for anything else.
For home PC use, doing this once a week would be plenty, once a month sort of OK, longer than that is juggling with chainsaws. Depends on what you use your PC for, not just on how often you use it.
If you take time to learn how to do this, you will be in a better place.
This is minimum, others may agree or disagree. It doesn't cover restore verification, 3 disk rotation and other points that nerds will appreciate, but it could be that in 2 days or 10 years time, you will be glad you started it.
Lecture over, happy Christmas and prosperous new year to all. Off now to make sure the chimney is clear and mince pies are out ready for tonight.
Andrew.
