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Junk files/registry errors


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#1 Saku

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Posted 20 August 2012 - 07:23 AM

Hi there.

I don't know the best place to post this so please advise me if its in the wrong place. I ran an analysis on my laptop for defrag using auslogics as I haven't done one in a year and it also told me that I had junk files and registry errors etc that I needed to get rid of before defragging. I've run Ccleaner, Glary utilities and advanced systemcare free and it still tells me there are files/errors to get rid of. I don't really want to buy a program atm just to get rid of these if theres a perfectly good free program I can use - does anyone know of anything else other than the ones mentioned that will clear this up? Is it essential that I do?

I'm running Win7 SP1 64bit. My laptop is only just over a year old.

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#2 Allan

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Posted 20 August 2012 - 07:36 AM

Bleeping Computer DOES NOT recommend the use of registry cleaners/optimizers for several reasons:

  • Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable.

    The Windows registry is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component because it is where Windows "remembers" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable. For a more detailed explanation, read Understanding The Registry.
  • Not all registry cleaners are created equal. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work.
  • Not all registry cleaners create a backup of the registry before making changes. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE making any changes to the registry.
  • Improperly removing registry entries can hamper malware disinfection and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable to removal tools.
  • The usefulness of cleaning the registry is highly overrated and can be dangerous. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results".
Unless you have a particular problem that requires a registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily or incorrectly could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great.



#3 Saku

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Posted 20 August 2012 - 10:07 AM

Okay, sorry I wasn't aware of this, thanks for bringing it to my attention. What do you suggest? Does it matter that I've used it before? Laptop seems to be running fine atm.

Is it advisable to uninstall some of the cleaners? I've heard ccleaner is a good software.

#4 Allan

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Posted 20 August 2012 - 10:12 AM

Uninstalling the software will not effect changes to the registry that have already been made but yes, you should uninstall them anyway. CCleaner doesn't do anything you can't do on your own, but other than the registry cleaner module it's essentially a benign piece of software. Use it, don't use it - it's up to you. Just don't use the registry cleaner module.

#5 Saku

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Posted 20 August 2012 - 10:22 AM

Okay. One more thing, is it imperative that I restore any of the backups for the registry changes I made with Ccleaner as they are all saved in my documents, or should I just leave it for now? As I said I haven't had any recent problems with my laptop.

Can I ask what software I should use to defrag with? Is it safe to use SmartDefrag?

#6 Allan

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Posted 20 August 2012 - 10:24 AM

If you aren't having any issues I'd just leave it alone. As for a defrag utility, any you choose will be fine.




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