It's no wonder no one gathered your intended meaning/intent, as you skipped the minor details of saying you had a known infected system, and could not do Windows updates
give Malwarebytes AntiMalware (free trial anyway) a full scan, let it remove whatever it finds....(if your infected system will even let you install it)
https://www.malwarebytes.com/mwb-download
After that, give a trial run of Sophos Hitman64 Pro...
https://www.hitmanpro.com/en-us/downloads
Anything those two can't find, you are likely going to resort to a proverbial 'nuke and pave' anyway if starting with a known infected system, and if infected, you should do this anyway...(Can you really trust that everything was removed?)
To quote Corporal Hicks from...