These are the reasons make your pc slow.
* ActiveX, OLE/COM Entries
* Uninstall Entries
* Un use file extensions
* Invalid shortcuts
* Un use, empty registry keys
* Internet Cached files
If you can clean these areas extensively believe me your computer will be faster like you just installed the operation system. This is the software I personally use for keep my pcs in good standard and its really easily to use.
Why use Registry Easy?
With few clicks you can just scan your system registry for any issue and when it is found out what are the issues it gets a backup of your registry and store it in your program files. (You do not have to take a backup manually). Then you can simply fix your registry and make your pc faster.
First you can download it and scan your registry. If you have issues then you can purchase. This is only $39.95 per 1 year.