Click this link Download CCleaner…
Download & install it…..
Step 2: Go to registry Cleaner, scan for issues and if u ask a question to create a registry changes backup?? (YES & NO) if you want……!
then fix all selected issues ……..
Step 3: Go to tools section and uninstall program if u don’t need applications…..!
Step 4: Go to again tools section>startup (because every system startup work fast is most important to all things in first) then select program if u don’t want to need running in windows startup and Go to disable option……!