Cleaning the registry
Below is a list of tools suitable for cleaning the registry:
Wise Registry Cleaner

Wise Registry Cleaner is an application for cleaning the registry:
Wise Registry Cleaner
Regseeker
RegSeeker is a free tool used for cleaning Windows Registry :
Ad-aware
Ad aware allows you to clean your system from adwares / spywares.
Ccleaner

Ccleaner is the leading free tool for cache and temp file cleaning :
JV16 PowerTools
- Close all applications and even internet connection.
- Launch jv16 PowerTools and go to Preferences -> language, select your language and press ok.
- Click on tool registry
- In the command bar: Tools-> registry cleaner -> [continue] -> [Start]
- The software will then proceed. Note this process might for a short while.
- Once treatment is completed, select the round green per pack of 20 or 30.
- Then click [delete], and repeat the process until it is no more green.
- After the process, restart your computer