Despite all the efforts of software developers, existing operating systems are still subject to various kinds of errors. To eliminate them, many auxiliary applications have been written that automatically check the basic parameters of Windows and make the necessary changes.
Affordable Variety
Some are distributed free of charge, others require payment. Moreover, this is not at all an indicator of effectiveness. The range of tasks is also different.
So, some are real software combines that can "fix" Windows 7 registry errors, malfunctions in dlls, fonts, ActiveX controls, etc. Others are highly specialized and designed to solve only certain tasks. For example, they perform Windows 7 error recovery due to which the speed of work with the
global network decreases or it is impossible to make a connection.
Ms fix it
The program, created by Microsoft and called “Fix It”, is unfortunately not very popular yet, although its capabilities are quite enough to eliminate most of the most common errors. A program in the usual sense of the word can only be called with certain reservations. Microsoft FixIt is, rather, a tool that allows you to localize problems and get a means to solve it. The user must select the “Topic”, which is most closely associated with the error, then clarify by going through the branch, and download the corresponding utility from the Web using the received link (if it is issued). For example, if crashes occur while viewing multimedia files (video, audio, photos), then you need to select the theme "Windows". The second step is to indicate what exactly the error is associated with. And finally, in the third paragraph, it remains to make a choice in favor of one or another proposed solution. In this case, it could be “Errors while reading CDs”, “Slowing down work with external media”, “Decreasing computer performance”, etc.

The advantage of this solution is that Windows 7 error recovery is free and quite effective. A flaw can indicate the temporary inability to work with the new Win 8.
NetAdapter (Repair All In One)
This utility, as the name implies, fixes Windows 7 network-related errors. It allows you to configure the work of network adapters, reset Winsock, delete unnecessary entries from the hosts file, clear routing and DNS paths, and much more. The user must select the desired items in the left column of the program, marking them with checkmarks, and click the “Run All Selected” button. After that, it will remain to restart the computer. Using this software solution is free. It is recommended to have at least a general idea of what and why is listed.
PC Plus by Anvisoft
Those who liked MS Fix It, but for some reason working with it is impossible (for example, using Win 8), it is recommended to pay attention to an alternative solution. The Anvisoft PC Plus program is very similar to the Microsoft Problem Solving Center, but it works even with newer versions of operating systems. The usage algorithm is exactly the same.
To work, you need an active Internet connection to download the missing files. The application is able to fix Windows 7 errors related to the absence of some DLL files, problems with launching the task manager , etc. It is worth noting that the program does not install any additional modules (usually unwanted) on the computer. Of the shortcomings, one can only indicate the absence of the Russian language in the interface and the relatively small number of tasks to be solved. However, the development of this application is still ongoing, new features are added to it. Perhaps in the near future, developers will please users with a Russian interface.

Popular cleaner
Perhaps the most famous Windows 7 error repair program is Ccleaner. It not only performs registry cleaning and deletes temporary system files, but is also able to remove unnecessary from popular browsers. Troubleshooting Windows 7 enables the system to work faster, freeing up the load in the form of completely unnecessary files and records. Completely free, has a Russian-language interface. To enable it after the initial launch, you need to open Settings and change English to Russian.
In many cases, it is possible to solve problems with the operation of the operating system by revising entries in the registry. To do this, select the item with the appropriate name and click the "Search for problems" button. If errors are found, then to fix them you need to use the "Fix" command. In this case, it will be proposed to save the current parameters, which is a very good idea. But the full cleaning needs to be activated selectively, not trusting the “automation”, since otherwise, you can lose the addresses of the pages visited in the browser, cache and some other data.
BSOD
Although the stability of modern operating systems is several times higher than that of their predecessors, sometimes fatal crashes occur, leading to the appearance of the so-called “blue screen of death” - BSOD. Seeing the error codes that are displayed in this case, we can conclude what the reason is. After that, it remains to choose the right solution - to make changes to the system manually or use specialized programs. Of course, you need to know what the error codes mean. However, if BSOD occurs, then after repeated loading, you can try to check the operating system for errors using the above applications.