CCleaner.
CLEAN UNNECESSARY FILES : If you want to remove windows junk files then at windows tab, check options of Internet explorer and Windows explorer which you tend to remove.
For removing junk files from application, do the same thing.
Now click "ANALYZE" wait for few seconds then click run cleaner
REPAIR REGISTRY : Now You don't have to pay to software for repairing registry. To repair registry, at registry tab click "SCAN FOR ISSUES" and then click "FIX SELECTED ISSUES" to repair registry files.
You can also uninstall files easily and disable/delete startup application entry to increase computer boot speed safely using this app.
If you can't, let me know.
