For your future reference, Windows Backup has never been a reliable method to backup your personal data files!

It's always been better to backup them up with Windows Explorer (Windows File Manager in W10) manually, using copy-and-paste to external media of some sort; CD/DVD disc, flash/thumb drive, external hard drive, Cloud storage account (on the Internet). You may get lucky and get some of your files back using Mike's methods. More likely, if you never tested those CDs with Windows Backup, you have a better chance of winning the State Lottery than getting 100% of your files back!

Sorry to be the bearer of such bad news.
I might also suggest that you find yourself a licensed Computer Pro in your community or a computer chain repair shop such as Best Buy Geek Squad or Micro Center, and pay a professional to try and attempt to recover the files on your CDs to your computer. This will typically cost from
$40-$160 US or so.
In the future, you should consider using one of these 3 programs to make Backup Image files of your hard drive. These work like a snapshot of your drive and capture 100% of your Windows settings, systems files, desktop settings, Library folder data,
AND all your installed programs. The way you backed up, after you Reset your PC; you'll have to
MANUALLY put all this stuff back 1 item at a time.

This typically takes an average home user
2 weeks - 3 months or more, depending on how much stuff you had on that PC prior to your Reset.
Since you posted your question in the W10 sub-forum,
I'll assume you are running W10 (if not, please tell us!). We've thoroughly tested these 3 programs and they are only in order or my Personal preference; any will work for you FAR better than Windows Backup. Here they are:
1.) MACRIUM REFLECT
2.) ACRONIS TRUEIMAGE
3.) EASEus TODO You can simply Google these to get their home website pages, from which you can download the Free versions of their programs. Macrium, which many of us think is the best of the lot, has altered their policy and their program is free to use for 30 days trial basis; and if you wish to use longer, you'll have to pay around
$69 US. My recommended strategy here is that if you choose Macrium, you can get your PC properly backed up for free, but say a year or more from now you have to Reset your PC again, or your hard drive fails and you have to replace it, you may have to purchase the Macrium in order to Restore your Backup image file and get all your stuff back!

I have 8-Win10 computers, so I'm looking at purchasing a 4-pack at least in order to do Restores on all my computers. However, that's a small price to pay rather than having to spend weeks or months, as you will now be doing, in order to get your PC back to where it was before you did your Reset to get it working properly again, don't you agree??
Hope this helps you.
<<<<BIGBEARJEDI>>>>