First of all.....
Do you have a backup of all your critical data?
Have you at any point performed any disk image backups as suggested here....
https://www.windows10forums.com/threads/please-for-your-own-peace-of-mind.794/
Which would allow you to return your installation, in a relatively short span of time, to a point in time when that image was created.
IF you have the installation media you can try performing what is called an in-place / upgrade / repair. That is to say...... upgrade it again, overtop of itself from within your current install, just double click setup.exe in the installation media. Just be sure to check the little box to get updates as part of the upgrade process.
That will generally keep all your programs, data, drivers and such safe, but.....
I would still create a disk image before going forward.
Neosmart has a pretty good article on it here
https://neosmart.net/wiki/windows-10-repair-installation/
You can skip the first couple paragraphs where they are promoting their recovery CDs and drill down to the meat of the article below.
IF you do not have the installation media, the ISO can be obtained here
https://www.microsoft.com/en-us/sof...459594)(TnL5HPStwNw-WaTVja5C7z2Vs7q82apCPg)()
Choose Windows 10, the first item in the first drop down (not single language at the bottom)
* see note at bottom.
Next choose your language and your bit version (32 or 64 bit to match your system architecture or in the case of an upgrade, to match your currently installed version of Windows).
That will provide an ISO that will boot, upgrade, repair (or clean install) either or both Windows 10 Pro and Home.
Within Windows 10 you can just double click the ISO file to mount it as a virtual drive and run setup.exe from that virtual drive to perform the in-place / upgrade / repair.
*NOTE: In some cases, we've learned that some people have the "Single Language" version installed. In which case you would need that download. It's important that you match the ISO version that you download with your installation.
To keep and maintain a copy of the installation media on hand for future use, you might want to take the further step of creating the actual installation media from the ISO.
Once you have downloaded the ISO you can use ImgBurn to burn it to a DVD
http://imgburn.com/index.php?act=download
OR
Rufus to burn it to a USB ThumbDrive
http://rufus.akeo.ie/
When you've created the installation media then you simply launch setup.exe from the media from within your current version of Windows to perform the in-place upgrade, OR.....
perform a custom clean install, OR....
Boot the computer to access the Windows Recovery Environment to use some of the advanced troubleshooting tools.