Are registry cleaners and defrag(s) needed? [Solved]

Are registry cleaners and defrag(s) needed?

I've been wondering for about a year now..

Anwsers to the Problem Are registry cleaners and defrag(s) needed?

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Registry cleaners will not improve performance, double the speed of a computer or any other spurious clams made.
Back in the days of Windows 9x, it was important to control the size of the registry, and for this purpose, Microsoft released their very own registry cleaner which only removed entries which were absolutely safe to remove.
 
BUT, that was back in the days of Windows 9x.
Windows NT and all of the operating systems spawned from NT do not handle the registry in the same way as Windows 9x did.
Windows NT and higher have a much larger limit to the size and they ignore orphaned entries.
 
The Windows 7 registry can grow to 2gb before the OS falls over, and even a well used system is unlikely to have a registry over 250mb.
 
As Richard has already stated, defragmenters have their own pet algorythms, and the work done by one is subsequently undone by another.
The Windows defragmenter is as good as any even if you can't see it at work..
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1. Access the files on your computer via MY COMPUTER
2. Under the C: drive, access the WINDOWS folder
3. Select the SOFTWARE DISTRIBUTION folder, followed by the DOWNLOAD folder.
4. Delete any files within this download folder.
5. If you are unable to delete these files, open the command prompt (CMD) as the administrator, and type "net stop wuauserv" into the CMD prompt window. Press ENTER. This should allow you to delete the files from step 4.
6. Once the files are deleted, open and run the CMD as the administrator and type "wuauclt.exe /updatenow". Press ENTER.

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