Windows 10: i need help with my windows and registry cleaning

this post was super unhelpful*https://answers.microsoft.com/en-us/windows/forum/all/registry-cleaner-for-windows-10/fb7b8fbb-4380-4876-8515-2aebf4744259*because... well lets face it... there was no info about anything, just people talking :so, my situation is really complicated... super short version: my computer thinks theres 3 windows 10's running... exp. i open 1x league of legends it opens 2-3 of the same thing.it was somthing like i had windows on an external, then i pluged my internal back in and well another internal, so 3 windows... after removing everything accept 1 harddrive, i had

:)

 

Problem with APK Registry Cleaning Engine 2002++ SR-7

Everytime I try and start APK Registry Cleaning Engine 2002++ SR-7 I get this really slow window that starts to open. The program itself says it running but it looks more like a virus or something (I know its not). I downloaded it from the download section. Any suggestions?

 

registry cleaners?cleaning PC?

hey guys what are some good registry cleaners out there? and some good cleaning programs?
right now i have
CClean
Cleanup!
Superantispyware
Avast
Malwarebytes' Anti-Malware
Microsoft Security Essentials


get a new system would like it to stay clean, also cleaning out the old system would like the windows registry fixed...he doesn't want me to reformat *Confused so im doing the best in cleaning i can but i know there some registry issues....should i just reinstall windows with out deleted everything?possible?

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx