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Best PC Optimizer 2021

WiseCare 365: Download Options

Best PC Repair Software to Fix Windows

Last Updated: February 23, 2021

Fix and clean your PC with the top PC repair software. A slow and sporadic performing Windows computer will continue to get worse over time. Use the best repair tool of this year to bring back your computer to a 100% stable state.

Top Repair Software for 2021 (February)

After testing all of the leading PC Optimizer Software, we created this list to showcase the finest options to fix your Windows PC, improve speed, and increase overall stability. We created problem-filled laptop and desktop test systems. Here's the best PC repair software after using over 30 PC repair programs to try and solve the issues.

Best PC Repair of 2021

1. WiseCare 365 Professional

"The most comprehensive repair tool currently available to repair a PC. Besides solving 100% of our errors, it also fully optimized the PC to prevent any recurrence of the problems. Also improved PC and Internet performance considerably."

WiseCare 365 99%With WiseCare 365, you will be able to bring back your PC to a like-new state and rid yourself of those problematic and lingering errors. Of all the PC optimizers we tried and tested, WiseCare 365 delivered full repair every time. It does an incredible job of finding errors that are well hidden deep within the Windows operating system. What's not to like here, perfect repairs on a smooth running machine that stays that way, as any future slowdowns and problems are immediately nipped in the bud.

WiseCare 365 solves stubborn PC problems that many other optimization programs overlook. That is its' true strength, full and extensive repair with advanced optimization to improve PC and Internet performance.

Let me explain how many PC problems manifest themselves. Annoying errors are sometimes caused by weak uninstalls by shoddily programmed software. The leftover remnants in the Windows registry can cause corruption affecting your system speed and stability. By running the comprehensive WiseCare 365 repair scan, the registry cleaner will find every leftover registry entry, the full PC scan will also check every hidden folder including anything left over in the hidden ProgramData and AppData folders for defunct or corrupt files that may be causing problems.

Once fully repaired, you'll have a faster and certainly much more stable computer to get back to doing what you like most about computing. Use your PC like when it was new, without having to worry about those nasty crashes, delays, freezes, and other problems that are the bane of every user.

Recommended for... those who need to fix a slow PC or a problem-filled computer. Even great for perfectly running PC's to make sure they never nudge towards any problems. If you want perfect stability along with your PC performing even better than when it was new, get the Pro version of WiseCare 365. It had the leading repair results from our our problem-filled laptop and desktop test systems.

Works with: All old or new PC Desktops, Notebooks, Laptops & Tablets running...
Microsoft Windows® 10. 8, 7

2. System Mechanic Pro

"A collection of utilities and tools to help fix PC problems and prevent them from returning. A distant second, as it lagged behind our top pick considerably."

System Mechanic Pro 95% System Mechanic s an excellent system repair utility. It uses a very complex repair module to go deep within your system settings and make repairs. The result will be a trouble-free PC with much better overall speed.

The optimization engine works within the Windows OS to clear problems and find any potential future ones, Safe and fairly easy to use, but some inexperienced users may find it a little too complicated, but if you take your time, and simply use the automatic functions at the beginning, you should have no problems at all. In fact, most every repair and optimization can be achieved with just a few clicks, but more intricate and complicated settings are there in case you need to dig a little deeper to fix a problem.

3. Advanced SystemCare Pro or Ultimate

"Another good system repair tool. Fix your PC, then optimize it to improve speed with the optimization engine."

Advanced SystemCare Ultimate 91% Advanced SystemCare is a good system tuneup utility. It can deliver a very thorough fix for most troubled Windows' computer.

After it fixes your PC, you'll be able to go full out with the included advanced performance optimization to give you slightly better speed and improved stability.

There's a fine selection of tools included. Many need to be downloaded as separate installs due to the focused nature of the repair or tuneup module. The advanced uninstaller helps solve many problems. Also does a fair job of repairing Internet connectivity problems with the Internet optimizer module. Using these network optimizations, your connectivity may be fixed of any connection issues and, if successful, actually boost your overall Internet speed.

Whether you have system errors or connection drop-outs, ASC Pro or Ultimate can help to fix your PC problem. We prefer the Ultimate version because it includes an excellent malicious code scan which can help repair and protect against serious security issues caused by malware.

Compare Ratings & Results for 2021

How did we conclude which software is the best to fix Windows? Here's what we tested for.

  • Effectiveness of the full PC repair modules in the software
  • Stability after repairs and checked if the fix held up over time
  • Registry cleaning and optimization - remove harmful corrupt or defunct data
  • Ability to thwart and prevent future problems to maintain an error-free PC
  • Cleans junk files and leftover data from bad uninstall's and malware

Use the comparison chart below to see which is the best PC repair software of 2021.

PC Repair Comparison Ratings and Results
Best PC Repair Software 1st 2nd 3rd
Ratings & Results for 2021
WiseCare 365 Professional System Mechanic Pro Advanced SystemCare
Best for... PC Repair    
Price: $39.95
Final Overall Score:
95% 91%
PC Repair Modules:
Clean Registry:
Optimize Registry:
Automatic Control:
B+ A
Slowdown Protection:
Clean and Optimize Data:
Ease of Use:
Optimize PC Speed:
B+ B+
Optimize Internet:
Improve PC Startup:
Improve PC Gaming:
B+ A
Manual Control:
20+ Other Variables:
A- B

After analyzing all of the data, you can clearly see the fix for system problems on any Windows computer is WiseCare 365 Professional.

Common Questions

What is the best Windows repair software?

Answer: We tested 35 Windows repair programs and the only one that fixed 100% of our errors was WiseCare 365 Pro. It's the best by a long shot and should be your first choice when trying to solve any stubborn PC problems.

Are PC repair tools safe to use?

Answer: The leading repair tools listed on this page are perfectly safe to use. Be careful of other web sites that promote software programmed by amateurs or unscrupulous marketers that try to sell outdated software with ancient programming code that can harm your PC.

Should I get a free Windows repair tool or buy software to fix my PC?

Answer: Free PC repair downloads only scan your system for problems and show you the number of errors. Many times the errors reported are very exaggerated to get you to panic so you buy their ineffective software, hoping for a fix. These tricks are all too common with these junkware peddlers. You should buy only professionally engineered software (see our list above) designed specifically to fix your computer in the safest way possible.

Are there repair tools within Windows to fix PC problems?

Answer: Yes. There are various troubleshooting tools within Windows, but they only work on basic problems and may only temporarily fix issues. Also, the system restore tool within Windows can repair your problem by resetting your PC to a previous point. However, this may not work in all cases and can sometimes cause even more problems.

Are third-party software repair tools safe to use?

Answer: Only if it's a professionally engineered software solution developed by an expert programming team with complete knowledge of the Windows operating system. Our list contains the safest and most effective solutions to fix a PC.

Beware of many junkware programs that promise a full repair for free or very cheaply. Those scareware programs may destroy your system and require you to do a full re-install of Windows to fix it.

Can I use these system repair utilities on a business PC?

Answer: Many technical administrators use these repair utilities, but they're also easy to use for ordinary users. It's important to check your company policy before using any software on a business PC.


Your computer crashed. Will it boot up again. It does, but now what? Get a system repair utility as fast as possible to fix your PC so you don't lose your valuable data and program's custom settings. These system tuneup software solutions will bring back your PC to the confident and well working machine it was before any of those annoying problems started cropping up.

It's an easy decision for us to recommend WiseCare 365 Pro as it provided the only 100% perfect repair results on our test systems. However, it goes beyond that. The continual PC optimization will significantly improve PC and Internet performance, while keeping your system's stability at a rock-solid state.

With every problem nipped in the bud, your laptop or desktop PC will remain in perfect running condition over its' entire lifetime. Worth it for the perfect repair and stability performance. Worth it for the stress it will save you over the years.

Article Facts:

  • The repair software tested in this study took over 100 hours to complete.
  • A total of 35 system repair utilities were researched and tested.
  • This article took over 1 week to prepare, write, and check for accuracy.
  • The long length of this article was necessary to give you in-depth information. It's an important decision on which PC repair software to trust and you deserve as many details possible to help you choose.

Thanks for reading.

Author: SpeedupNew

SpeedupNew (a collaborative effort by our team)

All of our writers have over a decade of experience reviewing software, tweaking, and just flat out enjoying their computers. We treasure our PC's just like you do. We're here to help you get the most out of your computer.

Best PC Repair Software

WiseCare 365: Download Options

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