[Case Study] Why Cleaning Software Is Unnecessary in Windows 7 and Windows 8.1

When you do a search for the best registry cleaner and cleaning software, there are hundreds of products. All of them boast around 100% performance gain and tempt you to shell out money on them. But are they really necessary? The only product you will need for cleaning your PC and registry is CCleaner (even this is required only if your PC becomes really slow). There is not even maintenance software for this purpose in Windows 7 and 8.1.

How to Believe My Words?

Recently, “Fred Langa of Windows Secrets” (source: windowssecrets.com) has performed a case study on the efficacy of 3 cleaning software in Win 7 and Win 8.1. These 3 cleaning tools are one of the leading products for system/registry cleaning in the industry.

  1. jv16 PowerTools X
  2. Advanced SystemCare
  3. Piriform’s CCleaner

One of these tools even claimed to improve the speed of your PC by 47%. Another product is highly popular in this category and promoted well in the Internet industry, such as Piriform’s CCleaner, which is often recommended for its effectiveness in optimizing system performance. But after all, what do the results say? You can look at this screenshot of the case study data, which again supports my case that only CCleaner (once in a while) is required to have performance gain.

case study cleaning software 2015

From the above screenshot we can at least say that the test systems do not require any maintenance with third-party tools. Also, as boasted by some, “47% faster boot times” are nowhere to be seen by using this third-party cleaning software. Finally, if you still require any maintenance, it is only through lightweight tools like CCleaner, which are sufficient enough.

A Deeper Insight into the Case Study?

As each system is different from another with its own unique hardware, software, uninstalls, and installs. One should not come to a conclusion by just believing this case study. You need to study your own system if you want to come to a conclusion. My personal experience of 15 years of Windows experience goes with the author of the case study.

First of all, my words are to be taken for Windows 7 and 8.1 systems only. Because earlier legacy systems like 9x, XP, and Vista used to have a tendency of leaving a lot of software debris during install and uninstall. This also added up to the registry baggage, and cleaning them up from time to time improved system performance and boot times. But in 2015, that is not the case.

If you observe Microsoft’s page for the use of cleaning software, you can see it here.

A damaged Windows registry can exhibit a range of symptoms, including excessive CPU utilization, longer startup and shutdown times, poor application functionality, or random crashes or hangs. These random crashes and hangs can ultimately lead to data loss due to the system’s inability to save data back to the storage location during the occurrence.

Microsoft does not support the use of registry cleaners

Microsoft is not responsible for issues caused by using a registry cleaning utility.

Microsoft cannot guarantee that problems resulting from the use of a registry cleaning utility can be solved

Before you modify the registry, make sure you back it up, create a restore point, and make sure that you understand how to restore the registry if a problem occurs.

More Details on the Windows Secrets Case Study?

The author makes it clear that all reviews of PC-cleaning software share a major obstacle. The results of the performance tests only apply to the test machine. Your system configuration may give different test results, depending upon the OS, hardware, software, and other nonsense done on the system. Hence, published test results are only used as a general guide.

Note: Before running a third-party cleaner on any PC, just back up your work and registry.

Test setup for baseline system

To help ensure fairness and repeatability in my tests, I used two long-established, plain-vanilla, virtual PCs (VPCs) as baseline systems. One runs Win7 SP1, and the other runs Win8.1, upgraded from Win8.0. Both are real-life Windows setups I’ve used routinely for work for years.

For a full configuration, you can look at the original article.

Test setup for “dirty” system

Next, to simulate a real-life system, I downloaded and installed 15 popular apps on both test VPCs. To select which apps to install, I used the then-current user-popularity ratings reported by Download.com.

Test Setup up for Control Panel Uninstall

After installing and running the 15 apps, I then uninstalled everything via the Control Panel’s standard uninstall applet. Because the uninstaller is not an aggressive tool, it typically leaves behind at least some orphaned files, excess Registry settings, and so forth.

I then use the above 3 tools one by one and compare them with the above results.

For example,

  • Win7-clean: baseline system
  • Win7-dirty: baseline system with 15 apps
  • Win7-std.uninstall: The “dirty” system was cleaned from the Control Panel uninstall.
  • Win7-jv16 PTX – system cleaned with jv16 Power Tools X
  • Win7-ASC Free – system cleaned with Advanced SystemCare (Free version)
  • Win7-CCleaner—system cleaned with Piriform’s CCleaner.

The first word only changes for the Windows 8.1 system setup.

jv16 powertools x system cleaning software

advanced system care cleaning software windows

ccleaner best cleaning software 2015

Are you to dump all the cleaning software/registry cleaners/system cleaners?

It depends, actually. If you are still using the old legacy systems, they might still be useful. But on Windows 7 and 8.1, they are not of much significance. As told in the article by the author, you can try the maintenance challenges, and you can have your own test results for 2015. Also, if you frequently keep uninstalling applications and use a lot of third-party software not authorized by Microsoft, you may have a lot of “debris” left over.

In such cases, it is better to use a tool like Revo Uninstaller (Free or Pro) to have a perfectly cleaned registry.

But in most of the cases for Windows 7 and 8.1, the cleaning software has a tendency to cause more disease rather than cure the system. These third-party tools unnecessarily remove a lot of required registry items and software pieces, which will ultimately cause you to format the system.

Written by
Palla Sridhar

Palla Sridhar is a Visakhapatnam-based Windows tech blogger, digital entrepreneur, and CEO of DigiPalla IT Services LLP. He writes practical guides on Windows 8/8.1/OS upgrades, PC buying decisions, and Microsoft software—helping everyday users make confident tech choices.

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