Just to add to the comment above about doing a backup.
There are some VERY nasty viruses and malware around at the moment.
You may have heard of one called "Ransomware" where all your files are "locked" or deleted unless you pay some money.
I am not saying you have it but who knows.
So it is important to "backup" all your personal files.
This can be as simple as copying them to an external hard drive, or a memory stick, or on to another computer, or even up to the cloud with Google Drive or similar product (or even to all of them).
It is VERY important to do this because there is a danger you could lose access to ALL the files on your computer if they are not backed up.