Windows 10: Broken registry items

Avast keeps telling me I have 200+ broken registry items and want me to pay them to clear everything up. How can I find and repair these myself?

:)

 

Broken registry items

I deleted broken registry items from my pc using cleaner software. It creates a backup file in a drive can i delete it from there? It may cause any problems

 

How to fix broken registry items on windows 10?

My antivirus software (AVG) is displaying that I have 237 issues with broken registry items. Is there any Microsoft tool to scan and resolve registry issues?

 

A load of broken registry items after Windows 10 reset

Here is the story:

• I initially reset my windows 10 PC because it had some issues (nothing like virus or malware issues, just windows wasn't setting my Microsoft account up properly so I decided to try again from scratch).
• After the reset (I chose to delete everything from both my hard drives) I somehow accumulated broken registry items that weren't previously on the computer (they never previously came up in performance scans).
• So I decided to do another reset hoping that would fix it... somehow added
  more broken registry items.
• After that I made some mistakes with CCleaner (deleted a bunch of registry items which caused some issues, however I did have a backup saved and learnt my lesson with CCleaner).
  
• I had looked online and many websites said that simply refreshing and resetting would restore the registry to normal. So I decided to do a "refresh" on windows 10 to try to restore them back to default.... which also added
  more broken registry items.

While I wouldn't normally be too concerned about it, I'm concerned because since the initial windows 10 reset my PC has been booting inconsistently such as in boot speed, load screens vary for windows sometimes, the behaviour of my USB inputs at boot and
I'm also now having to run programs as administrator to have them work correctly. Basically I'm having to do things I've never had to do previously on the same machine... and it's behaving inconsistent when it used to be
very consistent. The broken registry items are the only new abnormalities on the system since I tested my PC after drivers were all updated and that had no effect.

Is there anyway to fix this that actually works? I initially opted to reset my PC to take it back to a completely fresh windows 10 installation so not sure why these problems have accumulated.

I'm wondering if I buy a fresh hard drive and do a fresh install of windows 10 is it possible to still have broken registry items? If so, would just cleaning my current hard drives with a program and then doing a clean install of windows 10 on the SSD be
enough?